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Junkai Zeng

Quantum Physicist, Music Producer/DJ

Greetings!

I’m a quantum computing scientist currently working at the Shenzhen Institute of Quantum Science & Engineering (SIQSE). My research primarily revolves around the theoretical aspects of quantum control, encompassing quantum dynamics, dynamically corrected gates, quantum compiling, and noise characterization, among others. Nevertheless, I also have a broad interests in various math-heavy areas, particularly artificial intelligence.

Before joining SIQSE, I held the position of a senior quantum control engineer at Q-CTRL in Los Angeles. I received my Ph.D. in Physics from Virginia Tech (Let’s Go Hokies!), where I worked with Prof. Edwin Barnes. Prior to Ph.D. I got my B.S. in Physics from USTC and had the opportunity to conduct undergraduate research under the guidance of Chao-Yang Lu and Zhenhua Qiao. I also spent a summer as a research intern at IQC, University of Waterloo, working alongside Raymond Laflamme.

From time to time, you might catch me not working in quantum science research, but rather engrossed in projects centered around electronic music production or spinning tunes as a DJ. Operating under the moniker “Dr. Z”, I draw inspiration from artists like Tipper, Dirt Monkey, and The Floozies to create tunes that resonate with a funky, quirky, and psychedelic vibe. You can explore some of my tracks on Soundcloud. My passion for music also led me to ICON Collective, an LA-based music college, where I honed my skills.

Quirky Jelly!
Allow me to introduce you to Quirky Jelly, a charmingly slimy monster born out of a lab accident. Quirky Jelly is mischievous, intelligent, and has a peculiar fondness for weird funky music. Such is my affection for Quirky Jelly that I adopted this delightful creature’s look as my artist avatar.


I am now based in Shenzhen, China. Hit me up if you’re nearby and wanna grab a coffee or something! 😉

Publications

  1. “Quantum Circuits Noise Tailoring from a Geometric Perspective” arXiv
    J Zeng, YJ Hai, H Liang, XH Deng, arXiv:2305.06795 (2023)
  2. “Noisy intermediate-scale quantum computers” Link
    B Cheng, XH Deng, X Gu, Y He, G Hu, P Huang, J Li, BC Lin, D Lu, Y Lu, C Qiu, H Wang, T Xin, S Yu, MH Yung, J Zeng, S Zhang, Y Zhong, X Peng, F Nori, D Yu, Frontiers of Physics 18, 21308 (2023)
  3. “Universal robust quantum gates by geometric correspondence” arXiv
    YJ Hai, J Li, J Zeng, D Yu, XH Deng, arXiv:2210.14521 (2022)
  4. “Dynamically corrected gates from geometric space curves” arXiv
    E Barnes, FA Calderon-Vargas, W Dong, B Li, J Zeng, F Zhuang, Quantum Science and Technology 7 (2), 023001 (2022)
  5. “Noise-resistant Landau-Zener sweeps from geometrical curves” arXiv
    F Zhuang, J Zeng, SE Economou, E Barnes, Quantum 6, 639 (2022)
  6. “Designing arbitrary single-axis rotations robust against perpendicular time-dependent noise” arXiv
    B Li, FA Calderon-Vargas, J Zeng, E Barnes, New Journal of Physics 23 (9), 093032 (2021)
  7. “Geometric formalism for constructing arbitrary single-qubit dynamically corrected gates” arXiv
    J Zeng, CH Yang, AS Dzurak, E Barnes, Physical Review A 99 (5), 052321 (2019)
  8. “Fastest pulses that implement dynamically corrected single-qubit phase gates” arXiv
    J Zeng, E Barnes, Physical Review A 98 (1), 012301 (2018)
  9. “General solution to inhomogeneous dephasing and smooth pulse dynamical decoupling” arXiv
    J Zeng, XH Deng, A Russo, E Barnes, New Journal of Physics 20 (3), 033011 (2018)