Dr Kaveh Delfanazari
- Senior Lecturer (Electronic & Nanoscale Engineering)
email:
Kaveh.Delfanazari@glasgow.ac.uk
Electronics and Nanoscale Engineering (ENE) Division, School of Engineering, University of Glasgow, Glasgow, G12 8QQ UK
Biography
About the Principal Investigator:
Dr Kaveh Delfanazari holds a Leverhulme Trust Research Fellowship from the Royal Academy of Engineering and is an Associate Professor (University Senior Lecturer) of Electronic and Nanoscale Engineering at the James Watt School of Engineering, and Centre for Quantum Technology, University of Glasgow (UofG), UK. His recent awards include a Personal Research Fellowship from the Royal Society of Edinburgh.
Dr Delfanazari is a Senior Member of IEEE, a Steering Committee member of IEEE Quantum, a Committee Member of the IOP Quantum Electronic and Photonic group & IOP Superconductivity group, and a Fellow of the Higher Education Academy, UK. He has held positions as a Senior Research Associate in Quantum Devices and Circuits at the University of Cambridge, UK, a Research Fellow, and Project Leader in Superconducting and Quantum Metamaterials, at the University of Southampton, UK. Dr Delfanazari investigated integrated Superconducting Terahertz (THz) Emitters and Antennas- based on the Josephson effect- during his PhD work at the University of Tsukuba, Japan. His research works in Japan led him to receive the Dean’s Award for Excellence in PhD thesis, the Japanese government scholarship, several travel grants, and international best paper and presentation awards.
Research interests
My research is broadly concentrated on developing novel software and hardware architecture (based on hybrid semiconducting, graphene, and superconducting quantum materials) for robust quantum computing, quantum information, quantum communication, and green energy.
I lead a team of researchers undertaking multidisciplinary research at the forefront of micro, nano, and quantum science and technology. This includes the design, modelling, fabrication, characterization, and measurements of nanoelectronics and nanophotonic quantum devices such as:
-(Hybrid) Superconducting resonators, coherent quantum integrated circuits and qubits,
-(Josephson junction-based) chip-integrated microwave, and THz coherent light sources, THz science & technology,
-Micro and nano-engineered quantum devices such as antenna arrays, metamaterials, and waveguides for ultrafast quantum photonics.
Publications
2025
Foshat, P. et al. (2025) Characterizing niobium nitride-based superconducting coplanar waveguide resonators for microwave hybrid circuit quantum electrodynamics. IEEE Transactions on Applied Superconductivity, (doi: 10.1109/TASC.2025.3532821) (Early Online Publication)
2024
Delfanazari, K. (2024) Ultrafast terahertz superconductor van der Waals metamaterial photonic switch. Advanced Photonics Research, 5(10), 2400045. (doi: 10.1002/adpr.202400045)
Ma, P. et al. (2024) Statistical evaluation of 571 GaAs quantum point contact transistors showing the 0.7 anomaly in quantized conductance using millikelvin cryogenic on-chip multiplexing. Chip, 3(3), 100095. (doi: 10.1016/j.chip.2024.100095)
Delfanazari, K. (2024) On-chip coherent terahertz emitters with gigahertz modulation. Nature Photonics, 18, pp. 214-215. (doi: 10.1038/s41566-024-01399-x)
Delfanazari, K. et al. (2024) Large-scale on-chip integration of gate-voltage addressable hybrid superconductor-semiconductor quantum wells field effect nano-switch arrays. Advanced Electronic Materials, 10(2), 2300453. (doi: 10.1002/aelm.202300453)
Delfanazari, K. et al. (2024) Quantized conductance in hybrid split-gate arrays of superconducting quantum point contacts with semiconducting two-dimensional electron systems. Physical Review Applied, 21, 014051. (doi: 10.1103/PhysRevApplied.21.014051)
2023
Seferai, V. et al. (2023) Recent Material Developments for Superconducting Quantum Circuits. 2023 Cryogenic Engineering Conference and International Cryogenic Materials Conference (CEC & ICMC 2023), Honolulu, HI, USA, 09-13 Jul 2023.
Zhang, M., Pirandola, S. and Delfanazari, K. (2023) Millimetre-waves to terahertz SISO and MIMO continuous variable quantum key distribution. IEEE Transactions on Quantum Engineering, 4, 4100410. (doi: 10.1109/TQE.2023.3266946)
2022
Kalhor, S., Savel'ev, S. and Delfanazari, K. (2022) Engineering ultrastrong coupling between Josephson plasmon polaritons and subwavelength microcavity arrays in silicon/van der Waals layered superconductor heterostructure for terahertz hybrid circuit cavity quantum electrodynamics. Physical Review B, 106(24), 245140. (doi: 10.1103/PhysRevB.106.245140)
Foshat, P. et al. (2022) Nitride-based superconducting coplanar waveguide resonator with an internal quality factor above one million. 35th International Symposium on Superconductivity (ISS2022), Nagoya, Japan, 29 November – 1 December 2022.
Zhang, M., Foshat, P., Poorgholam Khanjari, S., Imran, M. , Weides, M. and Delfanazari, K. (2022) Quantum Key Distribution on microwave band for superconducting quantum computing. 35th International Symposium on Superconductivity (ISS2022), Nagoya, Japan, 29 November – 1 December 2022.
Delfanazari, K., Ma, P., Li, J., Yi, T., Puddy, R., Farrer, I., Ritchie, D., Kelly, M., Joyce, H. and Smith, C. (2022) Gate voltage-addressable quantum chips with arrays of hybrid superconducting two-dimensional electron gas quantum well field-effect switches. Applied Superconductivity Conference (ASC 22), Honolulu, Hawaii, 23-28 October 2022.
Delfanazari, K. and Muskens, O. L. (2022) Visible to Near-infrared Chip-integrated Tunable Optical Modulators Based on Niobium Plasmonic Nano-antenna and Nano-circuit Metasurface Arrays. In: PhotonIcs and Electromagnetics Research Symposium (PIERS 2022), Hangzhou, China, 25-28 Apr 2022, pp. 924-929. ISBN 9781665460231 (doi: 10.1109/PIERS55526.2022.9792866)
Zhang, M., Foshat, P., Poorgholam Khanjari, S., Imran, M. , Weides, M. and Delfanazari, K. (2022) Microwave Quantum Key Distribution with Cryogenic Microwave Components for Superconducting Quantum Computing. In: 2022 International Symposium on Quantum Computing: Circuits Systems Automation and Applications (QC-CSAA), Knoxville, TN, USA, 18-19 July 2022, (Accepted for Publication)
Foshat, P., Danilin, S. , Baity, P. , Seferai, V. , Mukhanov, O., Hutchings, M., Hadfield, R. , Imran, M. , Weides, M. and Delfanazari, K. (2022) Microwave Photonic Losses in Niobium Nitride-based Superconducting Resonator Array. In: Applied Superconductivity Conference (ASC 22), Honolulu, Hawaii, 23-28 October 2022, (Accepted for Publication)
Kalhor, S. et al. (2022) Active Terahertz Modulator and Slow Light Metamaterial Devices with Hybrid Graphene-superconductor Coupled Split-ring Resonator Arrays. In: PhotonIcs and Electromagnetics Research Symposium (PIERS 2022), Hangzhou, China, 25-28 Apr 2022, pp. 967-971. ISBN 9781665460231 (doi: 10.1109/PIERS55526.2022.9792980)
Seferai, V. et al. (2022) Tantalum on Sapphire and Silicon Substrates for Superconducting Quantum Circuits. American Physical Society March Meeting 2022, Chicago, IL, USA, 14-18 Mar 2022.
Xiong, Y. and Delfanazari, K. (2022) Engineering Circular Polarization in Chip-integrated High-Tc Superconducting THz Antennas. In: 2021 Photonics & Electromagnetics Research Symposium (PIERS), Hangzhou, China, 21-25 Nov 2021, pp. 1016-1019. ISBN 9781728172477 (doi: 10.1109/PIERS53385.2021.9694960)
2021
Kalhor, S. et al. (2021) Active terahertz modulator and slow light metamaterial devices with hybrid graphene–superconductor photonic integrated circuits. Nanomaterials, 11(11), 2999. (doi: 10.3390/nano11112999)
Delfanazari, K. (2021) Quantum Terahertz Electronics: From Superconducting Coherent THz Light Sources to Ultracompact Waveguides and Photonic Integrated Circuitry with Quantum Materials. 12th International Conference on Intrinsic Josephson Effect and Horizons of Superconducting Spintronics, Chişinău, Moldova, 22-25 Oct 2021. ISBN 9789975472159
Xiong, Y., Kashiwagi, T., Klemm, R. A., Kadowaki, K. and Delfanazari, K. (2021) Voltage-controlled Polarization and Cavity Modes in Integrated Superconducting Coherent Terahertz Emitters. 12th International Conference on Intrinsic Josephson Effect and Horizons of Superconducting Spintronics, Chişinău, Moldova, 22-25 Sep 2021. p. 70. ISBN 9789975472159
Kalhor, S., Ghanaatshoar, M., Joyce, H. J., Ritchie, D. A., Kadowaki, K. and Delfanazari, K. (2021) Millimeter-wave-to-terahertz superconducting plasmonic waveguides for integrated nanophotonics at cryogenic temperatures. Materials, 14(15), 4291. (doi: 10.3390/ma14154291)
Delfanazari, K., Serra, L., Ma, P., Farrer, I., Ritchie, D., Joyce, H., Kelly, M. J. and Smith, C. G. (2021) Topological Josephson Junctions Based on InGaAs Quantum Wells. APS March Meeting 2021, 15-19 March 2021.
2020
Pitsun, D. et al. (2020) Cross coupling of a solid-state qubit to an input signal due to multiplexed dispersive readout. Physical Review Applied, 14, 054059. (doi: 10.1103/PhysRevApplied.14.054059)
Kindness, S. J., Almond, N. W., Michailow, W., Wei, B., Delfanazari, K., Braeuninger‐Weimer, P., Hofmann, S., Beere, H. E., Ritchie, D. A. and Degl'Innocenti, R. (2020) A terahertz chiral metamaterial modulator. Advanced Optical Materials, 8(21), 2000581. (doi: 10.1002/adom.202000581)
Delfanazari, K., Klemm, R. A., Joyce, H. J., Ritchie, D. A. and Kadowaki, K. (2020) Integrated, portable, tunable, and coherent terahertz sources and sensitive detectors based on layered superconductors. Proceedings of the IEEE, 108(5), pp. 721-734. (doi: 10.1109/JPROC.2019.2958810)
Serra, L. and Delfanazari, K. (2020) Evidence for Majorana phases in the magnetoconductance of topological junctions based on two-dimensional electron gases. Physical Review B, 101, 115409. (doi: 10.1103/PhysRevB.101.115409)
Delfanazari, K., Serra, L., Ma, P., Farrer, I., Ritchie, D. A., Joyce, H. J., Kelly, M. J. and Smith, C. G. (2020) Hybrid quantum circuits in vertical magnetic fields. APS March Meeting 2020, Denver, Colorado, USA, 2-6 March 2020.
Kalhor, S., Ghanaatshoar, M. and Delfanazari, K. (2020) On-chip Superconducting THz Metamaterial Bandpass Filter. In: 2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Buffalo, NY, USA, 8-13 Nov. 2020, ISBN 9781728166209 (doi: 10.1109/IRMMW-THz46771.2020.9370663)
Kalhor, S., Ghanaatshoar, M. and Delfanazari, K. (2020) Guiding of Terahertz Photons in Superconducting Nano-Circuits. In: 2020 International Conference on UK-China Emerging Technologies (UCET), Glasgow, UK, 20-21 Aug. 2020, ISBN 9781728194882 (doi: 10.1109/UCET51115.2020.9205480)
Xiong, Y., Kashiwagi, T., Klemm, R.A., Kadowaki, K. and Delfanazari, K. (2020) Engineering the Cavity modes and Polarization in Integrated Superconducting Coherent Terahertz Emitters. In: 2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Buffalo, NY, USA, 8-13 Nov. 2020, ISBN 9781728166209 (doi: 10.1109/IRMMW-THz46771.2020.9370587)
2019
Kindness, S. J. et al. (2019) Graphene-integrated metamaterial device for all-electrical polarization control of terahertz quantum cascade lasers. ACS Photonics, 6(6), pp. 1547-1555. (doi: 10.1021/acsphotonics.9b00411)
Delfanazari, K. et al. (2019) Scalable quantum integrated circuits on superconducting two-dimensional electron gas platform. Journal of Visualized Experiments(150), e57818. (doi: 10.3791/57818)
Delfanazari, K., Klemm, R. A., Tsujimoto, M., Cerkoney, D. P., Yamamoto, T., Kashiwagi, T. and Kadowaki, K. (2019) Cavity modes in broadly tunable superconducting coherent terahertz sources. Journal of Physics: Conference Series, 1182, 012011. (doi: 10.1088/1742-6596/1182/1/012011)
Delfanazari, K. et al. (2019) Andreev reflections and magnetotransport in 2D Josephson junctions. Journal of Physics: Conference Series, 1182, 012010. (doi: 10.1088/1742-6596/1182/1/012010)
2018
Delfanazari, K. et al. (2018) Proximity induced superconductivity in indium gallium arsenide quantum wells. Journal of Magnetism and Magnetic Materials, 459, pp. 282-284. (doi: 10.1016/j.jmmm.2017.10.057)
Delfanazari, K. et al. (2018) On-chip hybrid superconducting-semiconducting quantum circuit. IEEE Transactions on Applied Superconductivity, 28(4), 1100304. (doi: 10.1109/TASC.2018.2812817)
2017
Delfanazari, K. et al. (2017) On‐chip Andreev devices: hard superconducting gap and quantum transport in ballistic Nb–In 0.75 Ga 0.25 As‐quantum‐well–Nb Josephson junctions. Advanced Materials, 29(37), 1701836. (doi: 10.1002/adma.201701836) (PMID:28804969)
Kalhor, S., Ghanaatshoar, M., Kashiwagi, T., Kadowaki, K., Kelly, M. J. and Delfanazari, K. (2017) Thermal tuning of high-Tc superconducting Bi2Sr 2CaCu2 O8+δ terahertz metamaterial. IEEE Photonics Journal, 9(5), 1400308. (doi: 10.1109/JPHOT.2017.2754465)
Klemm, R. et al. (2017) Coherent emission from the intrinsic Josephson junctions in thermally-managed, high-symmetry Bi2Sr2CaCu2O8+δ devices. 16th International Workshop on Vortex Matter in Superconductors, Natal, Brazil, 28 May - 2 June 2017.
2016
Cerkoney, D. P. et al. (2016) Cavity mode enhancement of terahertz emission from equilateral triangular microstrip antennas of the high-Tcsuperconductor Bi2Sr2CaCu2O8 +δ. Journal of Physics: Condensed Matter, 29(1), 015601. (doi: 10.1088/0953-8984/29/1/015601) (PMID:27830669)
Gaskell, J. M., Afzaal, M., Sheel, D. W., Yates, H. M., Delfanazari, K. and Muskens, O. L. (2016) Optimised atmospheric pressure CVD of monoclinic VO2 thin films with picosecond phase transition. Surface and Coatings Technology, 287, pp. 160-165. (doi: 10.1016/j.surfcoat.2015.12.090)
Savinov, V., Delfanazari, K., Fedotov, V. A. and Zheludev, N. I. (2016) Giant nonlinearity in a superconducting sub-terahertz metamaterial. Applied Physics Letters, 108(10), 101107. (doi: 10.1063/1.4943649)
2015
Kashiwagi, T. et al. (2015) Efficient fabrication of intrinsic-Josephson-junction terahertz oscillators with greatly reduced self-heating effects. Physical Review Applied, 4(5), 054018. (doi: 10.1103/PhysRevApplied.4.054018)
Delfanazari, K., Savinov, V., Muskens, O.L. and Zheludev, N.I. (2015) Optical superconducting plasmonic metamaterial. 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics – Metamaterials 2015, Oxford, United Kingdom, 6-11 September 2015.
Delfanazari, K., Asai, H., Tsujimoto, M., Kashiwagi, T., Kitamura, T., Yamamoto, T., Wilson, W., Klemm, R. A., Hattori, T. and Kadowaki, K. (2015) Effect of bias electrode position on terahertz radiation from pentagonal mesas of superconducting Bi2Sr2CaCu2O8+δ. IEEE Transactions on Terahertz Science and Technology, 5(3), pp. 505-511. (doi: 10.1109/TTHZ.2015.2409552)
Delfanazari, K., Savinov, V., Muskens, O. L. and Zheludev, N. I. (2015) Superconducting Metamaterial: Resonant Response at Visible Wavelengths. IOP 2015 Joint UK-Japan Workshop on Physics and Applications of Superconductivity (JWPAS), 12 - 15 April 2015.
Delfanazari, K., Savinov, V., Muskens, O. and Zheludev, N. I. (2015) Resonant Response of Superconducting Metamaterial at Optical Frequencies. 5th International Topical Meeting on Nanophotonics and Metamaterials (NANOMETA '15), Austria, 5 - 8 January 2015.
Delfanazari, K., Asai, H., Tsujimoto, M., Kashiwagi, T., Kitamura, T., Yamamoto, T., Wilson, W., Klemm, R. A., Hattori, T. and Kadowaki, K. (2015) The influence of electrode position on the current-voltage characteristics and terahertz radiation in a high-Tc superconducting device. In: 2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz), Hong Kong, China, 23-28 Aug 2015, pp. 1-2. ISBN 9781479982721 (doi: 10.1109/IRMMW-THz.2015.7327928)
Delfanazari, K., Takanari, K., Tsujimoto, M., Kitamura, T., Asai, H., Yamamoto, T., Wilson, W., Klemm, R. A., Hattori, T. and Kadowaki, K. (2015) Broadband High-Tc Superconducting Terahertz Emitter Devices: A Comparison between Differently Shaped Devices. The 12th European Conference on Applied Superconductivity (EUCAS 2015), Lyon, France, 6-10 September 2015.
Kashiwagi, T. et al. (2015) Generation of electromagnetic waves from 0.3 to 1.6 terahertz with a high- Tc superconducting Bi2Sr2CaCu2O8+δ intrinsic Josephson junction emitter. Applied Physics Letters, 106(9), 092601. (doi: 10.1063/1.4914083)
2014
Delfanazari, K. et al. (2014) Terahertz oscillating devices based upon the intrinsic Josephson junctions in a high temperature superconductor. Journal of Infrared, Millimeter, and Terahertz Waves, 35(1), pp. 131-146. (doi: 10.1007/s10762-013-0027-y)
Kadowaki, K., Tsujimoto, M., Delfanazari, K., Kitamura, T., Ishida, K., Watanabe, C., Sekimoto, S., Minami, H. and Kashbvagi, T. (2014) THz Emission from Intrinsic Josephson Junctions in High-Tc Superconductors for Imaging Applications. In: 2013 Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference CLEO EUROPE/IQEC, Munich, Germany, 12-16 May 2013, p. 1. ISBN 9781479905942 (doi: 10.1109/CLEOE-IQEC.2013.6800796)
Klemm, R. A. et al. (2014) Emission Distributivities from Novel Geometrical Antennas. The 9th International Symposium on Intrinsic Josephson Effects and THz Plasma Oscillations in High-Tc Superconductors (THz-PLASMA 2014), Kyoto, Japan, November 30 - December 3 2014.
Savinov, V., Delfanazari, K., Fedotov, V.A. and Zheludev, N.I. (2014) Planar Superconducting Toroidal Metamaterial: A Source for Oscillating Vector-Potential? 2014 Conference on Lasers and Electro-Optics (CLEO) - Laser Science to Photonic Applications, San Jose, CA, United States, 8-13 June 2014. FTu1C.1. ISBN 9781557529992 (doi: 10.1364/CLEO_QELS.2014.FTu1C.1)
Savinov, V., Delfanazari, K., Fedotov, V. A. and Zheludev, N. I. (2014) Giant sub-THz Nonlinear Response in Superconducting Metamaterial. 2014 Conference on Lasers and Electro-Optics (CLEO) - Laser Science to Photonic Applications, San Jose, CA, United States, 8-13 June 2014. SW3I.8. ISBN 9781557529992 (doi: 10.1364/CLEO_SI.2014.SW3I.8)
2013
Kitamura, T. et al. (2013) Effects of magnetic fields on the coherent THz emission from mesas of single crystal Bi2Sr2CaCu2O8+δ. Physica C: Superconductivity, 494, pp. 117-120. (doi: 10.1016/j.physc.2013.05.011)
Delfanazari, K. et al. (2013) Study of coherent and continuous terahertz wave emission in equilateral triangular mesas of superconducting Bi2Sr2CaCu2O8+δ intrinsic Josephson junctions. Physica C: Superconductivity, 491, pp. 16-19. (doi: 10.1016/j.physc.2012.12.009)
Kadowaki, K. et al. (2013) Quantum terahertz electronics (QTE) using coherent radiation from high temperature superconducting Bi2Sr2CaCu2O8+δ intrinsic Josephson junctions. Physica C: Superconductivity, 491, pp. 2-6. (doi: 10.1016/j.physc.2013.04.011)
Klemm, R. A., Delfanazari, K., Tsujimoto, M., Kashiwagi, T., Kitamura, T., Yamamoto, T., Sawamura, M., Ishida, K., Hattori, T. and Kadowaki, K. (2013) Modeling the electromagnetic cavity mode contributions to the THz emission from triangular Bi2Sr2CaCu2O8+δ mesas. Physica C: Superconductivity and its Applications, 491, pp. 30-34. (doi: 10.1016/j.physc.2012.11.006)
Delfanazari, K. et al. (2013) High-Tc Superconducting Terahertz Oscillation Devices. Conference on Lasers and Electro-Optics (CLEO) 2013, San Jose, CA, USA, 9-14 June 2013.
Delfanazari, K. et al. (2013) High-Temperature Superconducting Terahertz Emitters with Various Mesa Structures. American Physical Society (APS) March Meeting, Baltimore, Maryland, USA, 18-22 March 2013.
Delfanazari, K. et al. (2013) Tunable terahertz emission from the intrinsic Josephson junctions in acute isosceles triangular Bi2Sr2CaCu2O8+δ mesas. Optics Express, 21(2), pp. 2171-2184. (doi: 10.1364/OE.21.002171) (PMID:23389198)
Kadowaki, K. et al. (2013) (Invited) Coherent Emission of THz Radiation from Intrinsic Josephson junctions of High-Tc Superconductor Bi2Sr2CaCu2O8+δ Single Crystal Mesas Under Extreme Temperature Inhomogeneity. 14th International Workshop on Vortex Matter in Superconductors, Nanjing, China, 21-28 May 2013.
Kitamura, T. et al. (2013) Magnetic Field Effects on THz Radiation from Bi2Sr2CaCu2O8+δ Mesa Structures. American Physical Society (APS) March Meeting, Baltimore, Maryland, USA, 18-22 March 2013.
Klemm, R. et al. (2013) (Invited) Modeling the Coherent THz Radiation from Bi2Sr2CaCu2O8+δ Mesas of Various Geometries. 14th International Workshop on Vortex Matter in Superconductors, Nanjing, China, 21-28 May 2013.
Tsujimoto, M. et al. (2013) (Invited) Broadly Tunable THz Wave Emission from Intrinsic Josephson junctions in Bi2Sr2CaCu2O8+δ. 14th International Workshop on Vortex Matter in Superconductors, Nanjing, China, 21-28 May 2013.
Tsujimoto, M. et al. (2013) (Invited) Broadly tunable THz Wave Emission from Intrinsic Josephson junctions in Bi2Sr2CaCu2O8+δ high-Tc Superconductor. 68th Annual Meeting of The Physical Society of Japan (JPS), Hiroshima, Japan, 23-27 March 2013.
Tsujimoto, M. et al. (2013) Tunable THz radiation from intrinsic Josephson junctions in Bi2Sr2CaCu2O8+δ in a localized phase rotating mode. APS March Meeting, Maryland, USA, 18-22 March 2013.
2012
Tsujimoto, M., Minami, H., Delfanazari, K., Sawamura, M., Nakayama, R., Kitamura, T., Yamamoto, T., Kashiwagi, T., Hattori, T. and Kadowaki, K. (2012) Terahertz imaging system using high-Tc superconducting oscillation devices. Journal of Applied Physics, 111(12), 123111. (doi: 10.1063/1.4729799)
Tsujimoto, M. et al. (2012) Broadly tunable subterahertz emission from internal branches of the current-voltage characteristics of superconductingBi2Sr2CaCu2O8+δ single crystals. Physical Review Letters, 108(10), 107006. (doi: 10.1103/PhysRevLett.108.107006) (PMID:22463446)
Delfanazari, K. et al. (2012) Experimental and Theoretical Studies of Mesas of Several Geometries for Terahertz Wave Radiation from the Intrinsic Josephson Junctions in Superconducting Bi2Sr2CaCu2O8+δ. 2012 37th International Conference on Infrared, Millimeter, and Terahertz Waves, Wollongong, NSW, Australia, 23-28 September 2012. pp. 1-2. ISBN 9781467315975 (doi: 10.1109/IRMMW-THz.2012.6380230)
Delfanazari, K. et al. (2012) Terahertz Radiation in Various Shapes of Intrinsic Josephson Junctions Mesas in Superconducting Bi2Sr2CaCu2O8+δ. The 25th International Symposium on Superconductivity (ISS2012), Tokyo, Japan, 3-5 December 2012.
Delfanazari, K. et al. (2012) Tunable Terahertz Wave Radiation from Various Shapes of Mesas in High-Temperature Superconductor Bi2Sr2CaCu2O8+δ Intrinsic Josephson junctions; Designing of Mesa Arrays for Powerful Terahertz Radiation. 73rd Japan Society of Applied Physics (JSAP) Autumn Meeting, Ehime, Matsuyama, Japan, 11-14 September 2012.
Delfanazari, K. et al. (2012) THz Wave Radiation from Triangular Mesas in Layered High-Tc Superconductor Bi2Sr2CaCu2O8+δ Intrinsic Josephson Junctions. American Physical Society March meeting, Boston, USA, February 27–March 2 2012.
Delfanazari, K. et al. (2012) THz wave radiation from the triangular mesa structures of cuprate superconductor Bi2Sr2CaCu2O8+δ intrinsic Josephson junctions. The Physical Society of Japan (JPS) meeting, Hyogo, Japan
Delfanazari, K. et al. (2012) Study of various shapes of mesas for tunable, coherent and continuous terahertz waves emission in intrinsic Josephson junctions Bi2Sr2CaCu2O8+δ. The 8th international symposium on intrinsic Josephson effect and plasma oscillation in high-Tc temperature superconductors (PLASMA 2012), Izmir, Turkey, 10 - 13 June 2012.
Delfanazari, K. et al. (2012) THz emission from a triangular mesa structure of Bi-2212 intrinsic Josephson junctions. Journal of Physics: Conference Series, 400(2), 022014. (doi: 10.1088/1742-6596/400/2/022014)
Kadowaki, K., Kashiwagi, T., Asai, H., Tsujimoto, M., Tachiki, M., Delfanazari, K. and Klemm, R. A. (2012) Terahertz wave emission from intrinsic Josephson junctions in Bi2Sr2CaCu2O8+δ. Journal of Physics: Conference Series, 400(2), 022041. (doi: 10.1088/1742-6596/400/2/022041)
Kadowaki, K., Tsujimoto, M., Delfanazari, K., Kitamura, T., Sawamaura, M., Kashiwagi, T., Minami, H. and Klemm, R. (2012) (Invited) High Power Coherent Terahertz Emission from High-Temperature Superconductor Intrinsic Josephson Arrays. 3rd International Conference on Superconductivity and Magnetism (ICSM2012), Instanbul, Turkey, 29 April - 4 May 2012.
Kadowaki, K., Tsujimoto, M., Delfanazari, K., Kitamura, T., Sawamura, M., Asai, H., Kashiwagi, T., Minami, H., Tachiki, M. and Klemm, R. (2012) Enhancement of Terahertz Radiation from Intrinsic Josephson Junctions. International Conference on Materials & Mechanisms of Superconductivity, Washington DC, USA, 29 July - 3 August 2012.
Kadowaki, K., Tsujimoto, M., Delfanazari, K., Kitamura, T., Sawamura, M., Kashiwagi, T., Minami, H. and Klemm, R. (2012) Quantum Terahertz Electronics (QTE): Generation of Coherent Radiation from Mesa Structures of High-Temperature Superconducting Bi-2212 Intrinsic Josephson Junctions [Invited]. International Conference on Theoretical Physics: (Dubna-Nano 2012), Dubna, Russia, 9-14 July 2012.
Kadowaki, K., Tsujimoto, M., Delfanazari, K., Kitamura, T., Sawamura, M., Kashiwagi, T., Minami, H., Tachiki, M. and Klemm, R. A.
(2012)
High power THz radiation from high-T
Kadowaki, K. et al. (2012) THz LASER using high-Tc superconductor Bi2Sr2CaCu2O8+δ Mesa Structures. AIP Conference Proceedings, 1447, p. 7. (doi: 10.1063/1.4709860)
Kashiwagi, T. et al. (2012) Excitation mode characteristics in Bi2212 rectangular mesa structures. Journal of Physics: Conference Series, 400(2), 022050. (doi: 10.1088/1742-6596/400/2/022050)
Kashiwagi, T. et al. (2012) Study of the Radiation Line Width and Shape from the Bi2212 Mesa Structure. American Physical Society March meeting, Boston, USA, February 27–March 2 2012.
Kitamura, T. et al. (2012) Effect of magnetic field on the coherent THz emission from mesas of single crystal Bi2Sr2CaCu2O8+δ. American Physical Society March meeting, Boston, USA, February 27–March 2 2012.
Kitamura, T. et al. (2012) Effects of magnetic fields on the coherent THz emission from mesas of single crystal Bi2Sr2CaCu2O8+δ. The 25th International Symposium on Superconductivity (ISS12), Tokyo, Japan, 3-5 December 2012.
Klemm, R., Laberge, E., Reid, C., Morley, D., Delfanazari, K. and Kadowaki, K. (2012) Coherent THz Emission from Isosceles Triangular Mesas of Bi2Sr2CaCu2O8+δ. American Physical Society March meeting, Boston, USA, February 27–March 2 2012.
Tsujimoto, M., Yamamoto, T., Delfanazari, K., Nakayama, R., Orita, N., Koike, T., Deguchi, K., Kashiwagi, T., Minami, H. and Kadowaki, K. (2012) THz-wave emission from inner I-V branches of intrinsic Josephson junctions in Bi2Sr2CaCu2O8+δ. Journal of Physics: Conference Series, 400(2), 022127. (doi: 10.1088/1742-6596/400/2/022127)
Tsujimoto, M. et al. (2012) (Invited) Broadly Tunable Sub-Terahertz Radiation from High-Tc Superconducting Bi2Sr2CaCu2O8+δ Single Crystals. The 25th International Symposium on Superconductivity (ISS2012), Tokyo, Japan, 3-5 December 2012.
Tsujimoto, M. et al. (2012) Tunable Sub-Terahertz Emission from Intrinsic Josephson Junctions in Bi2Sr2CaCu2O8+δ Enhanced by the Internal Cavity Resonance. American Physical Society March meeting, Boston, USA, February 27–March 2 2012.
2011
Delfanazari, K. et al. (2011) THz wave emission from the triangular mesas in layered HTS Bi2Sr2CaCu2O8+δ Intrinsic Josephson Junctions. The 6th East Asia Symposium on Superconductor Electronics (EASSE 2011), Yamagata, Japan, 27-29 October 2011.
Delfanazari, K. et al. (2011) THz emission from a triangular mesa structure of Bi-2212 IJJs. 26th International Conference on Low Temperature Physics (LT26), Beijing, China, 10-17 August 2011.
Kadowaki, K., Kashiwagi, T., Asai, H., Tsujimoto, M., Tachiki, M., Delfanazari, K. and Klemm, R. A. (2011) Terahertz wave emission from intrinsic Josephson junctions in Bi2Sr2CaCu2O8+δ. 26th International Conference on Low Temperature Physics (LT26), Beijing, China, 10-17 August 2011.
Kadowaki, K., Tsujimoto, M., Delfanazari, K., Asai, H., Ivanovic, K., Yamamoto, T., Kashiwagi, T., Minami, H., Tachiki, M. and Klemm, R. (2011) (Invited) Coherent Terahertz Radiation Phenomena from High-Temperature Superconductor Mesa Structures. 7th International Conference on Vortex Matter in Nanostructured Superconductors, Rhodes, Greece, 10-17 September 2011.
Kadowaki, K., Yamamoto, T., Asai, H., Tsujimoto, T., Delfanazari, K., Ivanovic, K., Minami, H., Kashiwagi, T., Tachiki, M. and Klemm, R. (2011) (Invited) Towards 1 mW coherent and continuous terahertz wave generation and Its applications. The 13th International Workshop on Vortex Matter in Superconductors, Chicago, USA, 31 July - 5 August 2011.
Kashiwagi, T. et al. (2011) The relationship between oscillation modes and single crystalline Bi2212 mesa structures. The American Physical Society March Meeting, Dallas, Texas, USA, 21-25 March 2011.
Kashiwagi, T. et al. (2011) Radiation frequency and mode characteristics of terahertz waves in single crystalline Bi2212 mesa structures. The 13th International Workshop on Vortex Matter in Superconductors, Chicago, USA, 31 July - 5 August 2011.
Kashiwagi, T. et al. (2011) High temperature superconductor terahertz emitters: fundamental physics and its applications. Japanese Journal of Applied Physics, 51(1), 010113. (doi: 10.1143/JJAP.51.010113)
Tsujimoto, M., Minami, H., Sawamura, M., Delfanazari, K., Kitamura, T., Nakayama, R., Yamamoto, T., Kashiwagi, T. and Kadowaki, K. (2011) THz imaging system with the intrinsic Josephson Junction emitter. The 13th International Workshop on Vortex Matter in Superconductors, Chicago, USA, 31 July - 5 August 2011.
Tsujimoto, M., Nakayama, R., Orita, N., Koike, T., Deguchi, K., Delfanazari, K., Yamamoto, T., Kashiwagi, T., Minami, H. and Kadowaki, K. (2011) Coherent THz-wave emission from voltage-and number-controlled intrinsic Josephson junctions in Bi-2212. The American Physical Society March Meeting, Dallas, Texas, USA, 21-25 March 2011.
Articles
Foshat, P. et al. (2025) Characterizing niobium nitride-based superconducting coplanar waveguide resonators for microwave hybrid circuit quantum electrodynamics. IEEE Transactions on Applied Superconductivity, (doi: 10.1109/TASC.2025.3532821) (Early Online Publication)
Delfanazari, K. (2024) Ultrafast terahertz superconductor van der Waals metamaterial photonic switch. Advanced Photonics Research, 5(10), 2400045. (doi: 10.1002/adpr.202400045)
Ma, P. et al. (2024) Statistical evaluation of 571 GaAs quantum point contact transistors showing the 0.7 anomaly in quantized conductance using millikelvin cryogenic on-chip multiplexing. Chip, 3(3), 100095. (doi: 10.1016/j.chip.2024.100095)
Delfanazari, K. (2024) On-chip coherent terahertz emitters with gigahertz modulation. Nature Photonics, 18, pp. 214-215. (doi: 10.1038/s41566-024-01399-x)
Delfanazari, K. et al. (2024) Large-scale on-chip integration of gate-voltage addressable hybrid superconductor-semiconductor quantum wells field effect nano-switch arrays. Advanced Electronic Materials, 10(2), 2300453. (doi: 10.1002/aelm.202300453)
Delfanazari, K. et al. (2024) Quantized conductance in hybrid split-gate arrays of superconducting quantum point contacts with semiconducting two-dimensional electron systems. Physical Review Applied, 21, 014051. (doi: 10.1103/PhysRevApplied.21.014051)
Zhang, M., Pirandola, S. and Delfanazari, K. (2023) Millimetre-waves to terahertz SISO and MIMO continuous variable quantum key distribution. IEEE Transactions on Quantum Engineering, 4, 4100410. (doi: 10.1109/TQE.2023.3266946)
Kalhor, S., Savel'ev, S. and Delfanazari, K. (2022) Engineering ultrastrong coupling between Josephson plasmon polaritons and subwavelength microcavity arrays in silicon/van der Waals layered superconductor heterostructure for terahertz hybrid circuit cavity quantum electrodynamics. Physical Review B, 106(24), 245140. (doi: 10.1103/PhysRevB.106.245140)
Kalhor, S. et al. (2021) Active terahertz modulator and slow light metamaterial devices with hybrid graphene–superconductor photonic integrated circuits. Nanomaterials, 11(11), 2999. (doi: 10.3390/nano11112999)
Kalhor, S., Ghanaatshoar, M., Joyce, H. J., Ritchie, D. A., Kadowaki, K. and Delfanazari, K. (2021) Millimeter-wave-to-terahertz superconducting plasmonic waveguides for integrated nanophotonics at cryogenic temperatures. Materials, 14(15), 4291. (doi: 10.3390/ma14154291)
Pitsun, D. et al. (2020) Cross coupling of a solid-state qubit to an input signal due to multiplexed dispersive readout. Physical Review Applied, 14, 054059. (doi: 10.1103/PhysRevApplied.14.054059)
Kindness, S. J., Almond, N. W., Michailow, W., Wei, B., Delfanazari, K., Braeuninger‐Weimer, P., Hofmann, S., Beere, H. E., Ritchie, D. A. and Degl'Innocenti, R. (2020) A terahertz chiral metamaterial modulator. Advanced Optical Materials, 8(21), 2000581. (doi: 10.1002/adom.202000581)
Delfanazari, K., Klemm, R. A., Joyce, H. J., Ritchie, D. A. and Kadowaki, K. (2020) Integrated, portable, tunable, and coherent terahertz sources and sensitive detectors based on layered superconductors. Proceedings of the IEEE, 108(5), pp. 721-734. (doi: 10.1109/JPROC.2019.2958810)
Serra, L. and Delfanazari, K. (2020) Evidence for Majorana phases in the magnetoconductance of topological junctions based on two-dimensional electron gases. Physical Review B, 101, 115409. (doi: 10.1103/PhysRevB.101.115409)
Kindness, S. J. et al. (2019) Graphene-integrated metamaterial device for all-electrical polarization control of terahertz quantum cascade lasers. ACS Photonics, 6(6), pp. 1547-1555. (doi: 10.1021/acsphotonics.9b00411)
Delfanazari, K. et al. (2019) Scalable quantum integrated circuits on superconducting two-dimensional electron gas platform. Journal of Visualized Experiments(150), e57818. (doi: 10.3791/57818)
Delfanazari, K., Klemm, R. A., Tsujimoto, M., Cerkoney, D. P., Yamamoto, T., Kashiwagi, T. and Kadowaki, K. (2019) Cavity modes in broadly tunable superconducting coherent terahertz sources. Journal of Physics: Conference Series, 1182, 012011. (doi: 10.1088/1742-6596/1182/1/012011)
Delfanazari, K. et al. (2019) Andreev reflections and magnetotransport in 2D Josephson junctions. Journal of Physics: Conference Series, 1182, 012010. (doi: 10.1088/1742-6596/1182/1/012010)
Delfanazari, K. et al. (2018) Proximity induced superconductivity in indium gallium arsenide quantum wells. Journal of Magnetism and Magnetic Materials, 459, pp. 282-284. (doi: 10.1016/j.jmmm.2017.10.057)
Delfanazari, K. et al. (2018) On-chip hybrid superconducting-semiconducting quantum circuit. IEEE Transactions on Applied Superconductivity, 28(4), 1100304. (doi: 10.1109/TASC.2018.2812817)
Delfanazari, K. et al. (2017) On‐chip Andreev devices: hard superconducting gap and quantum transport in ballistic Nb–In 0.75 Ga 0.25 As‐quantum‐well–Nb Josephson junctions. Advanced Materials, 29(37), 1701836. (doi: 10.1002/adma.201701836) (PMID:28804969)
Kalhor, S., Ghanaatshoar, M., Kashiwagi, T., Kadowaki, K., Kelly, M. J. and Delfanazari, K. (2017) Thermal tuning of high-Tc superconducting Bi2Sr 2CaCu2 O8+δ terahertz metamaterial. IEEE Photonics Journal, 9(5), 1400308. (doi: 10.1109/JPHOT.2017.2754465)
Cerkoney, D. P. et al. (2016) Cavity mode enhancement of terahertz emission from equilateral triangular microstrip antennas of the high-Tcsuperconductor Bi2Sr2CaCu2O8 +δ. Journal of Physics: Condensed Matter, 29(1), 015601. (doi: 10.1088/0953-8984/29/1/015601) (PMID:27830669)
Gaskell, J. M., Afzaal, M., Sheel, D. W., Yates, H. M., Delfanazari, K. and Muskens, O. L. (2016) Optimised atmospheric pressure CVD of monoclinic VO2 thin films with picosecond phase transition. Surface and Coatings Technology, 287, pp. 160-165. (doi: 10.1016/j.surfcoat.2015.12.090)
Savinov, V., Delfanazari, K., Fedotov, V. A. and Zheludev, N. I. (2016) Giant nonlinearity in a superconducting sub-terahertz metamaterial. Applied Physics Letters, 108(10), 101107. (doi: 10.1063/1.4943649)
Kashiwagi, T. et al. (2015) Efficient fabrication of intrinsic-Josephson-junction terahertz oscillators with greatly reduced self-heating effects. Physical Review Applied, 4(5), 054018. (doi: 10.1103/PhysRevApplied.4.054018)
Delfanazari, K., Asai, H., Tsujimoto, M., Kashiwagi, T., Kitamura, T., Yamamoto, T., Wilson, W., Klemm, R. A., Hattori, T. and Kadowaki, K. (2015) Effect of bias electrode position on terahertz radiation from pentagonal mesas of superconducting Bi2Sr2CaCu2O8+δ. IEEE Transactions on Terahertz Science and Technology, 5(3), pp. 505-511. (doi: 10.1109/TTHZ.2015.2409552)
Kashiwagi, T. et al. (2015) Generation of electromagnetic waves from 0.3 to 1.6 terahertz with a high- Tc superconducting Bi2Sr2CaCu2O8+δ intrinsic Josephson junction emitter. Applied Physics Letters, 106(9), 092601. (doi: 10.1063/1.4914083)
Delfanazari, K. et al. (2014) Terahertz oscillating devices based upon the intrinsic Josephson junctions in a high temperature superconductor. Journal of Infrared, Millimeter, and Terahertz Waves, 35(1), pp. 131-146. (doi: 10.1007/s10762-013-0027-y)
Kitamura, T. et al. (2013) Effects of magnetic fields on the coherent THz emission from mesas of single crystal Bi2Sr2CaCu2O8+δ. Physica C: Superconductivity, 494, pp. 117-120. (doi: 10.1016/j.physc.2013.05.011)
Delfanazari, K. et al. (2013) Study of coherent and continuous terahertz wave emission in equilateral triangular mesas of superconducting Bi2Sr2CaCu2O8+δ intrinsic Josephson junctions. Physica C: Superconductivity, 491, pp. 16-19. (doi: 10.1016/j.physc.2012.12.009)
Kadowaki, K. et al. (2013) Quantum terahertz electronics (QTE) using coherent radiation from high temperature superconducting Bi2Sr2CaCu2O8+δ intrinsic Josephson junctions. Physica C: Superconductivity, 491, pp. 2-6. (doi: 10.1016/j.physc.2013.04.011)
Klemm, R. A., Delfanazari, K., Tsujimoto, M., Kashiwagi, T., Kitamura, T., Yamamoto, T., Sawamura, M., Ishida, K., Hattori, T. and Kadowaki, K. (2013) Modeling the electromagnetic cavity mode contributions to the THz emission from triangular Bi2Sr2CaCu2O8+δ mesas. Physica C: Superconductivity and its Applications, 491, pp. 30-34. (doi: 10.1016/j.physc.2012.11.006)
Delfanazari, K. et al. (2013) Tunable terahertz emission from the intrinsic Josephson junctions in acute isosceles triangular Bi2Sr2CaCu2O8+δ mesas. Optics Express, 21(2), pp. 2171-2184. (doi: 10.1364/OE.21.002171) (PMID:23389198)
Tsujimoto, M., Minami, H., Delfanazari, K., Sawamura, M., Nakayama, R., Kitamura, T., Yamamoto, T., Kashiwagi, T., Hattori, T. and Kadowaki, K. (2012) Terahertz imaging system using high-Tc superconducting oscillation devices. Journal of Applied Physics, 111(12), 123111. (doi: 10.1063/1.4729799)
Tsujimoto, M. et al. (2012) Broadly tunable subterahertz emission from internal branches of the current-voltage characteristics of superconductingBi2Sr2CaCu2O8+δ single crystals. Physical Review Letters, 108(10), 107006. (doi: 10.1103/PhysRevLett.108.107006) (PMID:22463446)
Delfanazari, K. et al. (2012) THz emission from a triangular mesa structure of Bi-2212 intrinsic Josephson junctions. Journal of Physics: Conference Series, 400(2), 022014. (doi: 10.1088/1742-6596/400/2/022014)
Kadowaki, K., Kashiwagi, T., Asai, H., Tsujimoto, M., Tachiki, M., Delfanazari, K. and Klemm, R. A. (2012) Terahertz wave emission from intrinsic Josephson junctions in Bi2Sr2CaCu2O8+δ. Journal of Physics: Conference Series, 400(2), 022041. (doi: 10.1088/1742-6596/400/2/022041)
Kadowaki, K. et al. (2012) THz LASER using high-Tc superconductor Bi2Sr2CaCu2O8+δ Mesa Structures. AIP Conference Proceedings, 1447, p. 7. (doi: 10.1063/1.4709860)
Kashiwagi, T. et al. (2012) Excitation mode characteristics in Bi2212 rectangular mesa structures. Journal of Physics: Conference Series, 400(2), 022050. (doi: 10.1088/1742-6596/400/2/022050)
Tsujimoto, M., Yamamoto, T., Delfanazari, K., Nakayama, R., Orita, N., Koike, T., Deguchi, K., Kashiwagi, T., Minami, H. and Kadowaki, K. (2012) THz-wave emission from inner I-V branches of intrinsic Josephson junctions in Bi2Sr2CaCu2O8+δ. Journal of Physics: Conference Series, 400(2), 022127. (doi: 10.1088/1742-6596/400/2/022127)
Kashiwagi, T. et al. (2011) High temperature superconductor terahertz emitters: fundamental physics and its applications. Japanese Journal of Applied Physics, 51(1), 010113. (doi: 10.1143/JJAP.51.010113)
Conference or Workshop Item
Seferai, V. et al. (2023) Recent Material Developments for Superconducting Quantum Circuits. 2023 Cryogenic Engineering Conference and International Cryogenic Materials Conference (CEC & ICMC 2023), Honolulu, HI, USA, 09-13 Jul 2023.
Foshat, P. et al. (2022) Nitride-based superconducting coplanar waveguide resonator with an internal quality factor above one million. 35th International Symposium on Superconductivity (ISS2022), Nagoya, Japan, 29 November – 1 December 2022.
Zhang, M., Foshat, P., Poorgholam Khanjari, S., Imran, M. , Weides, M. and Delfanazari, K. (2022) Quantum Key Distribution on microwave band for superconducting quantum computing. 35th International Symposium on Superconductivity (ISS2022), Nagoya, Japan, 29 November – 1 December 2022.
Delfanazari, K., Ma, P., Li, J., Yi, T., Puddy, R., Farrer, I., Ritchie, D., Kelly, M., Joyce, H. and Smith, C. (2022) Gate voltage-addressable quantum chips with arrays of hybrid superconducting two-dimensional electron gas quantum well field-effect switches. Applied Superconductivity Conference (ASC 22), Honolulu, Hawaii, 23-28 October 2022.
Seferai, V. et al. (2022) Tantalum on Sapphire and Silicon Substrates for Superconducting Quantum Circuits. American Physical Society March Meeting 2022, Chicago, IL, USA, 14-18 Mar 2022.
Delfanazari, K. (2021) Quantum Terahertz Electronics: From Superconducting Coherent THz Light Sources to Ultracompact Waveguides and Photonic Integrated Circuitry with Quantum Materials. 12th International Conference on Intrinsic Josephson Effect and Horizons of Superconducting Spintronics, Chişinău, Moldova, 22-25 Oct 2021. ISBN 9789975472159
Xiong, Y., Kashiwagi, T., Klemm, R. A., Kadowaki, K. and Delfanazari, K. (2021) Voltage-controlled Polarization and Cavity Modes in Integrated Superconducting Coherent Terahertz Emitters. 12th International Conference on Intrinsic Josephson Effect and Horizons of Superconducting Spintronics, Chişinău, Moldova, 22-25 Sep 2021. p. 70. ISBN 9789975472159
Delfanazari, K., Serra, L., Ma, P., Farrer, I., Ritchie, D., Joyce, H., Kelly, M. J. and Smith, C. G. (2021) Topological Josephson Junctions Based on InGaAs Quantum Wells. APS March Meeting 2021, 15-19 March 2021.
Delfanazari, K., Serra, L., Ma, P., Farrer, I., Ritchie, D. A., Joyce, H. J., Kelly, M. J. and Smith, C. G. (2020) Hybrid quantum circuits in vertical magnetic fields. APS March Meeting 2020, Denver, Colorado, USA, 2-6 March 2020.
Klemm, R. et al. (2017) Coherent emission from the intrinsic Josephson junctions in thermally-managed, high-symmetry Bi2Sr2CaCu2O8+δ devices. 16th International Workshop on Vortex Matter in Superconductors, Natal, Brazil, 28 May - 2 June 2017.
Delfanazari, K., Savinov, V., Muskens, O.L. and Zheludev, N.I. (2015) Optical superconducting plasmonic metamaterial. 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics – Metamaterials 2015, Oxford, United Kingdom, 6-11 September 2015.
Delfanazari, K., Savinov, V., Muskens, O. L. and Zheludev, N. I. (2015) Superconducting Metamaterial: Resonant Response at Visible Wavelengths. IOP 2015 Joint UK-Japan Workshop on Physics and Applications of Superconductivity (JWPAS), 12 - 15 April 2015.
Delfanazari, K., Savinov, V., Muskens, O. and Zheludev, N. I. (2015) Resonant Response of Superconducting Metamaterial at Optical Frequencies. 5th International Topical Meeting on Nanophotonics and Metamaterials (NANOMETA '15), Austria, 5 - 8 January 2015.
Delfanazari, K., Takanari, K., Tsujimoto, M., Kitamura, T., Asai, H., Yamamoto, T., Wilson, W., Klemm, R. A., Hattori, T. and Kadowaki, K. (2015) Broadband High-Tc Superconducting Terahertz Emitter Devices: A Comparison between Differently Shaped Devices. The 12th European Conference on Applied Superconductivity (EUCAS 2015), Lyon, France, 6-10 September 2015.
Klemm, R. A. et al. (2014) Emission Distributivities from Novel Geometrical Antennas. The 9th International Symposium on Intrinsic Josephson Effects and THz Plasma Oscillations in High-Tc Superconductors (THz-PLASMA 2014), Kyoto, Japan, November 30 - December 3 2014.
Savinov, V., Delfanazari, K., Fedotov, V.A. and Zheludev, N.I. (2014) Planar Superconducting Toroidal Metamaterial: A Source for Oscillating Vector-Potential? 2014 Conference on Lasers and Electro-Optics (CLEO) - Laser Science to Photonic Applications, San Jose, CA, United States, 8-13 June 2014. FTu1C.1. ISBN 9781557529992 (doi: 10.1364/CLEO_QELS.2014.FTu1C.1)
Savinov, V., Delfanazari, K., Fedotov, V. A. and Zheludev, N. I. (2014) Giant sub-THz Nonlinear Response in Superconducting Metamaterial. 2014 Conference on Lasers and Electro-Optics (CLEO) - Laser Science to Photonic Applications, San Jose, CA, United States, 8-13 June 2014. SW3I.8. ISBN 9781557529992 (doi: 10.1364/CLEO_SI.2014.SW3I.8)
Delfanazari, K. et al. (2013) High-Tc Superconducting Terahertz Oscillation Devices. Conference on Lasers and Electro-Optics (CLEO) 2013, San Jose, CA, USA, 9-14 June 2013.
Delfanazari, K. et al. (2013) High-Temperature Superconducting Terahertz Emitters with Various Mesa Structures. American Physical Society (APS) March Meeting, Baltimore, Maryland, USA, 18-22 March 2013.
Kadowaki, K. et al. (2013) (Invited) Coherent Emission of THz Radiation from Intrinsic Josephson junctions of High-Tc Superconductor Bi2Sr2CaCu2O8+δ Single Crystal Mesas Under Extreme Temperature Inhomogeneity. 14th International Workshop on Vortex Matter in Superconductors, Nanjing, China, 21-28 May 2013.
Kitamura, T. et al. (2013) Magnetic Field Effects on THz Radiation from Bi2Sr2CaCu2O8+δ Mesa Structures. American Physical Society (APS) March Meeting, Baltimore, Maryland, USA, 18-22 March 2013.
Klemm, R. et al. (2013) (Invited) Modeling the Coherent THz Radiation from Bi2Sr2CaCu2O8+δ Mesas of Various Geometries. 14th International Workshop on Vortex Matter in Superconductors, Nanjing, China, 21-28 May 2013.
Tsujimoto, M. et al. (2013) (Invited) Broadly Tunable THz Wave Emission from Intrinsic Josephson junctions in Bi2Sr2CaCu2O8+δ. 14th International Workshop on Vortex Matter in Superconductors, Nanjing, China, 21-28 May 2013.
Tsujimoto, M. et al. (2013) (Invited) Broadly tunable THz Wave Emission from Intrinsic Josephson junctions in Bi2Sr2CaCu2O8+δ high-Tc Superconductor. 68th Annual Meeting of The Physical Society of Japan (JPS), Hiroshima, Japan, 23-27 March 2013.
Tsujimoto, M. et al. (2013) Tunable THz radiation from intrinsic Josephson junctions in Bi2Sr2CaCu2O8+δ in a localized phase rotating mode. APS March Meeting, Maryland, USA, 18-22 March 2013.
Delfanazari, K. et al. (2012) Experimental and Theoretical Studies of Mesas of Several Geometries for Terahertz Wave Radiation from the Intrinsic Josephson Junctions in Superconducting Bi2Sr2CaCu2O8+δ. 2012 37th International Conference on Infrared, Millimeter, and Terahertz Waves, Wollongong, NSW, Australia, 23-28 September 2012. pp. 1-2. ISBN 9781467315975 (doi: 10.1109/IRMMW-THz.2012.6380230)
Delfanazari, K. et al. (2012) Terahertz Radiation in Various Shapes of Intrinsic Josephson Junctions Mesas in Superconducting Bi2Sr2CaCu2O8+δ. The 25th International Symposium on Superconductivity (ISS2012), Tokyo, Japan, 3-5 December 2012.
Delfanazari, K. et al. (2012) Tunable Terahertz Wave Radiation from Various Shapes of Mesas in High-Temperature Superconductor Bi2Sr2CaCu2O8+δ Intrinsic Josephson junctions; Designing of Mesa Arrays for Powerful Terahertz Radiation. 73rd Japan Society of Applied Physics (JSAP) Autumn Meeting, Ehime, Matsuyama, Japan, 11-14 September 2012.
Delfanazari, K. et al. (2012) THz Wave Radiation from Triangular Mesas in Layered High-Tc Superconductor Bi2Sr2CaCu2O8+δ Intrinsic Josephson Junctions. American Physical Society March meeting, Boston, USA, February 27–March 2 2012.
Delfanazari, K. et al. (2012) THz wave radiation from the triangular mesa structures of cuprate superconductor Bi2Sr2CaCu2O8+δ intrinsic Josephson junctions. The Physical Society of Japan (JPS) meeting, Hyogo, Japan
Delfanazari, K. et al. (2012) Study of various shapes of mesas for tunable, coherent and continuous terahertz waves emission in intrinsic Josephson junctions Bi2Sr2CaCu2O8+δ. The 8th international symposium on intrinsic Josephson effect and plasma oscillation in high-Tc temperature superconductors (PLASMA 2012), Izmir, Turkey, 10 - 13 June 2012.
Kadowaki, K., Tsujimoto, M., Delfanazari, K., Kitamura, T., Sawamaura, M., Kashiwagi, T., Minami, H. and Klemm, R. (2012) (Invited) High Power Coherent Terahertz Emission from High-Temperature Superconductor Intrinsic Josephson Arrays. 3rd International Conference on Superconductivity and Magnetism (ICSM2012), Instanbul, Turkey, 29 April - 4 May 2012.
Kadowaki, K., Tsujimoto, M., Delfanazari, K., Kitamura, T., Sawamura, M., Asai, H., Kashiwagi, T., Minami, H., Tachiki, M. and Klemm, R. (2012) Enhancement of Terahertz Radiation from Intrinsic Josephson Junctions. International Conference on Materials & Mechanisms of Superconductivity, Washington DC, USA, 29 July - 3 August 2012.
Kadowaki, K., Tsujimoto, M., Delfanazari, K., Kitamura, T., Sawamura, M., Kashiwagi, T., Minami, H. and Klemm, R. (2012) Quantum Terahertz Electronics (QTE): Generation of Coherent Radiation from Mesa Structures of High-Temperature Superconducting Bi-2212 Intrinsic Josephson Junctions [Invited]. International Conference on Theoretical Physics: (Dubna-Nano 2012), Dubna, Russia, 9-14 July 2012.
Kashiwagi, T. et al. (2012) Study of the Radiation Line Width and Shape from the Bi2212 Mesa Structure. American Physical Society March meeting, Boston, USA, February 27–March 2 2012.
Kitamura, T. et al. (2012) Effect of magnetic field on the coherent THz emission from mesas of single crystal Bi2Sr2CaCu2O8+δ. American Physical Society March meeting, Boston, USA, February 27–March 2 2012.
Kitamura, T. et al. (2012) Effects of magnetic fields on the coherent THz emission from mesas of single crystal Bi2Sr2CaCu2O8+δ. The 25th International Symposium on Superconductivity (ISS12), Tokyo, Japan, 3-5 December 2012.
Klemm, R., Laberge, E., Reid, C., Morley, D., Delfanazari, K. and Kadowaki, K. (2012) Coherent THz Emission from Isosceles Triangular Mesas of Bi2Sr2CaCu2O8+δ. American Physical Society March meeting, Boston, USA, February 27–March 2 2012.
Tsujimoto, M. et al. (2012) (Invited) Broadly Tunable Sub-Terahertz Radiation from High-Tc Superconducting Bi2Sr2CaCu2O8+δ Single Crystals. The 25th International Symposium on Superconductivity (ISS2012), Tokyo, Japan, 3-5 December 2012.
Tsujimoto, M. et al. (2012) Tunable Sub-Terahertz Emission from Intrinsic Josephson Junctions in Bi2Sr2CaCu2O8+δ Enhanced by the Internal Cavity Resonance. American Physical Society March meeting, Boston, USA, February 27–March 2 2012.
Delfanazari, K. et al. (2011) THz wave emission from the triangular mesas in layered HTS Bi2Sr2CaCu2O8+δ Intrinsic Josephson Junctions. The 6th East Asia Symposium on Superconductor Electronics (EASSE 2011), Yamagata, Japan, 27-29 October 2011.
Delfanazari, K. et al. (2011) THz emission from a triangular mesa structure of Bi-2212 IJJs. 26th International Conference on Low Temperature Physics (LT26), Beijing, China, 10-17 August 2011.
Kadowaki, K., Kashiwagi, T., Asai, H., Tsujimoto, M., Tachiki, M., Delfanazari, K. and Klemm, R. A. (2011) Terahertz wave emission from intrinsic Josephson junctions in Bi2Sr2CaCu2O8+δ. 26th International Conference on Low Temperature Physics (LT26), Beijing, China, 10-17 August 2011.
Kadowaki, K., Tsujimoto, M., Delfanazari, K., Asai, H., Ivanovic, K., Yamamoto, T., Kashiwagi, T., Minami, H., Tachiki, M. and Klemm, R. (2011) (Invited) Coherent Terahertz Radiation Phenomena from High-Temperature Superconductor Mesa Structures. 7th International Conference on Vortex Matter in Nanostructured Superconductors, Rhodes, Greece, 10-17 September 2011.
Kadowaki, K., Yamamoto, T., Asai, H., Tsujimoto, T., Delfanazari, K., Ivanovic, K., Minami, H., Kashiwagi, T., Tachiki, M. and Klemm, R. (2011) (Invited) Towards 1 mW coherent and continuous terahertz wave generation and Its applications. The 13th International Workshop on Vortex Matter in Superconductors, Chicago, USA, 31 July - 5 August 2011.
Kashiwagi, T. et al. (2011) The relationship between oscillation modes and single crystalline Bi2212 mesa structures. The American Physical Society March Meeting, Dallas, Texas, USA, 21-25 March 2011.
Kashiwagi, T. et al. (2011) Radiation frequency and mode characteristics of terahertz waves in single crystalline Bi2212 mesa structures. The 13th International Workshop on Vortex Matter in Superconductors, Chicago, USA, 31 July - 5 August 2011.
Tsujimoto, M., Minami, H., Sawamura, M., Delfanazari, K., Kitamura, T., Nakayama, R., Yamamoto, T., Kashiwagi, T. and Kadowaki, K. (2011) THz imaging system with the intrinsic Josephson Junction emitter. The 13th International Workshop on Vortex Matter in Superconductors, Chicago, USA, 31 July - 5 August 2011.
Tsujimoto, M., Nakayama, R., Orita, N., Koike, T., Deguchi, K., Delfanazari, K., Yamamoto, T., Kashiwagi, T., Minami, H. and Kadowaki, K. (2011) Coherent THz-wave emission from voltage-and number-controlled intrinsic Josephson junctions in Bi-2212. The American Physical Society March Meeting, Dallas, Texas, USA, 21-25 March 2011.
Conference Proceedings
Delfanazari, K. and Muskens, O. L. (2022) Visible to Near-infrared Chip-integrated Tunable Optical Modulators Based on Niobium Plasmonic Nano-antenna and Nano-circuit Metasurface Arrays. In: PhotonIcs and Electromagnetics Research Symposium (PIERS 2022), Hangzhou, China, 25-28 Apr 2022, pp. 924-929. ISBN 9781665460231 (doi: 10.1109/PIERS55526.2022.9792866)
Zhang, M., Foshat, P., Poorgholam Khanjari, S., Imran, M. , Weides, M. and Delfanazari, K. (2022) Microwave Quantum Key Distribution with Cryogenic Microwave Components for Superconducting Quantum Computing. In: 2022 International Symposium on Quantum Computing: Circuits Systems Automation and Applications (QC-CSAA), Knoxville, TN, USA, 18-19 July 2022, (Accepted for Publication)
Foshat, P., Danilin, S. , Baity, P. , Seferai, V. , Mukhanov, O., Hutchings, M., Hadfield, R. , Imran, M. , Weides, M. and Delfanazari, K. (2022) Microwave Photonic Losses in Niobium Nitride-based Superconducting Resonator Array. In: Applied Superconductivity Conference (ASC 22), Honolulu, Hawaii, 23-28 October 2022, (Accepted for Publication)
Kalhor, S. et al. (2022) Active Terahertz Modulator and Slow Light Metamaterial Devices with Hybrid Graphene-superconductor Coupled Split-ring Resonator Arrays. In: PhotonIcs and Electromagnetics Research Symposium (PIERS 2022), Hangzhou, China, 25-28 Apr 2022, pp. 967-971. ISBN 9781665460231 (doi: 10.1109/PIERS55526.2022.9792980)
Xiong, Y. and Delfanazari, K. (2022) Engineering Circular Polarization in Chip-integrated High-Tc Superconducting THz Antennas. In: 2021 Photonics & Electromagnetics Research Symposium (PIERS), Hangzhou, China, 21-25 Nov 2021, pp. 1016-1019. ISBN 9781728172477 (doi: 10.1109/PIERS53385.2021.9694960)
Kalhor, S., Ghanaatshoar, M. and Delfanazari, K. (2020) On-chip Superconducting THz Metamaterial Bandpass Filter. In: 2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Buffalo, NY, USA, 8-13 Nov. 2020, ISBN 9781728166209 (doi: 10.1109/IRMMW-THz46771.2020.9370663)
Kalhor, S., Ghanaatshoar, M. and Delfanazari, K. (2020) Guiding of Terahertz Photons in Superconducting Nano-Circuits. In: 2020 International Conference on UK-China Emerging Technologies (UCET), Glasgow, UK, 20-21 Aug. 2020, ISBN 9781728194882 (doi: 10.1109/UCET51115.2020.9205480)
Xiong, Y., Kashiwagi, T., Klemm, R.A., Kadowaki, K. and Delfanazari, K. (2020) Engineering the Cavity modes and Polarization in Integrated Superconducting Coherent Terahertz Emitters. In: 2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Buffalo, NY, USA, 8-13 Nov. 2020, ISBN 9781728166209 (doi: 10.1109/IRMMW-THz46771.2020.9370587)
Delfanazari, K., Asai, H., Tsujimoto, M., Kashiwagi, T., Kitamura, T., Yamamoto, T., Wilson, W., Klemm, R. A., Hattori, T. and Kadowaki, K. (2015) The influence of electrode position on the current-voltage characteristics and terahertz radiation in a high-Tc superconducting device. In: 2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz), Hong Kong, China, 23-28 Aug 2015, pp. 1-2. ISBN 9781479982721 (doi: 10.1109/IRMMW-THz.2015.7327928)
Kadowaki, K., Tsujimoto, M., Delfanazari, K., Kitamura, T., Ishida, K., Watanabe, C., Sekimoto, S., Minami, H. and Kashbvagi, T. (2014) THz Emission from Intrinsic Josephson Junctions in High-Tc Superconductors for Imaging Applications. In: 2013 Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference CLEO EUROPE/IQEC, Munich, Germany, 12-16 May 2013, p. 1. ISBN 9781479905942 (doi: 10.1109/CLEOE-IQEC.2013.6800796)
Kadowaki, K., Tsujimoto, M., Delfanazari, K., Kitamura, T., Sawamura, M., Kashiwagi, T., Minami, H., Tachiki, M. and Klemm, R. A.
(2012)
High power THz radiation from high-T
Supervision
We always welcome talented and motivated students and researchers from diverse backgrounds interested in undertaking cutting-edge research projects in quantum technologies. Are you passionate about quantum computing, nanotechnology and cryogenic electronics? Do you thrive in a dynamic research environment developing cutting-edge technologies? If so, we always have exciting opportunities for you to join our multidisciplinary team.
Current open positions:
-Fully funded PhD studentship in nanoscale quantum metamaterials. Please apply online using the link or contact Kaveh for informal discussions:
PhD in Electrical Engineering - Light-matter Control of Cavity Quantum Metamaterials at Nanoscale
-We are seeking motivated and talented individuals to make leading contributions to projects in Hybrid Superconducting Quantum Computing. Please apply online using the link or contact Dr Kaveh Delfanazari, for informal discussions:
Research Assistant/Associate - Development of Gatemon Quantum Circuits
Research Assistant/Associate - Scalable Gatemon Quantum Computing with Cryo-FPGA
Research Assistant / Associate in Scalable Gatemon Quantum Computing with Cryo-CMOS
-We are seeking a motivated and talented individual to make a leading contribution to a project in the development and applications of Chip-scale Superconducting Quantum Light Sources. Please apply online using the link or contact Dr Kaveh Delfanazari, for informal discussions:
Research Associate in Chip-scale Superconducting Coherent mm-Waves and THz Light Sources
- Feng, Hua
Experimental realization of a scalable multi-qubit chip with superconducting quantum electronic circuits. - Psaroudis, Giorgos
Generation of picosecond pulses in Quantum Nanoelectronic Circuits
Teaching
- Micro and Nano technology,
- Microwave Integrated Circuits,
- Communication Circuit Design,
- Quantum Information Processing,
