Dr. Hoon Ryu, Korea Institute of Science and Technology Information, will be visiting the School of Engineering. As part of his visit he will deliver a seminar entitled, "Designs of Advanced Quantum Information Systems with Si:P alloy". Abstract and biography are given below.

Date & Time: 13:00, Monday, 27th March
Venue: Room 816, Rankine Building

Abstract

Silicon(Si)-based quantum computing has attracted attention since Si is known to have the extremely log decoherence time that is suitable to conserve quantum information (Qubits). Rapid progress in the scanning tunneling microscope (STM) lithography opened the possibility for designs of the core cell of Si-based quantum computer as well as other novel devices such as ultra-thin interconnectors and extremely shallow junctions etc., by integrating Phosphorus (P) atoms in bulk Si with a 0.5 nm precision. Needs for the corresponding modeling researches, therefore, have been also increased to predesign such systems&devices with consideration of diverse atomistic effects. In this seminar, (1) we brief the core logistics of charge-based quantum computing using single P atoms in Si layers, (2) introduce the recent modeling works for physically realized P quantum dots in bulk Si and (3) highly doped P nanowires in Si that can be used as ultrathin interconnects in read-out circuits. (4) Finally, we introduce our in-house code and address the particular need for simulations coupled to the high performance computing, to guide designs of scalable Si-based qubit systems that integrate many P donors.

Biography

Hoon Ryu received BSEE in Seoul National University (Republic of Korea), MSEE and PhD in Stanford and Purdue University (USA), respectively. He was with System LSI division, Samsung Electronics Corp., and is now with National Institute of Supercomputing and Networking, Korea Institute of Science and Technology information (KISTI), where he works as a principal researcher. He was one of the core developers of 3D NanoElectronics MOdeling tool (NEMO-3D) in Purdue University, and now leads the Intel Parallel Computing Center (IPCC) in KISTI. His research interest covers modelling researches of advanced nanoscale devices, and high performance computing with a focus on parallelization and performance optimization of large-scale PDE (partial differential equation) problems.

First published: 20 March 2017

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