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Yujun Choi

Postdoctoral Associate at Virginia Tech

Research Experience

University of Wisconsin-Madison

Sep. 2018 - Aug. 2023

PhD program at Robert Joynt group in Department of Physics

  • Study on the role of noise sources in pulse-induced resonance frequency shift of semiconductor qubits

  • Study on the effect of driving field on charge noise sources in semiconductor quantum dot devices

  • Investigation of the origin of 1/f noise with noninteracting and interacting noise dipole model

  • Noise characterization of semiconductor quantum dot devices by using anisotropy in relaxation and dephasing times

Korea Institute of Science and Technology (KIST)

Mar. 2014 - Aug. 2017

Yonsei-KIST Academia-Research-Industry Collaborate Program at Center for Quantum Information in KIST

  • Experimental realization of a noisy CNOT gate with linear-optic elements and data analysis of the noisy CNOT gate with respect to a preset noise parameter

  • Preparation and tomography of ququart states using polarization and time-bin modes of a single photon

  • Generation of non-zero quantum discord in a two-qubit state using the second-order interference of laser

  • Proof-of-principle experiment of Plug-and-Play measurement-device-independent quantum key distribution

Education

University of Wisconsin-Madison

Sep. 2018 - Aug. 2023

Doctor of Philosophy in Physics

Thesis: Characterization of Noise Sources in Semiconductor Qubit Devices

Yonsei University

Mar. 2014 - Aug. 2017

Master of Science in Physics

Thesis: Quantum Information Processing using Classical and Quantum Interference

Yonsei University

Bachelor of Science in Physics

Mar. 2010 - Feb. 2014

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