Kihwan's Group

Quantum Computation and Quantum Simulation with Trapped Ions

Prof. Kihwan Kim

kimkihwan(at)mail.tsinghua.edu.cn

Google Scholar

Welcome to Kihwan's group at Department of Physics, Tsinghua University.

Our researches mainly focus on developing quantum computation and quantum simulation with trapped ions. An ion-trap system is one of the leading platforms for a pratical large scale quantum device. It shows over 5000 second coherence time, over 99.9% logic gate fidelities and the largest quatnum volume among all physical platforms.

Currently, we focus on developing various trapped-ion systems with a linear ion chain, dual species of ions, and 2-dimensional ion crystal.

News

Sep 18, 2023 Yingye Huang and Zihan Yin joined as Ph. D students!
Jun 8, 2023 Dr. Mu Qiao and Dr. Wentao Chen have graduated successfully!
Jun 3, 2021 Dr. Pengfei Wang has graduated successfully!

Selected publications

  1. Nat. Phys.
    Tunable quantum simulation of spin models with a two-dimensional ion crystal
    Mu Qiao, Zhengyang Cai, Ye Wang, Botao Du, Naijun Jin, Wentao Chen, Pengfei Wang, Chunyang Luan, Erfu Gao, Ximo Sun, Haonan Tian, Jingning Zhang, and Kihwan Kim
    Nat. Phys. online, (2024).
    arXiv HTML
  2. npj. Quant. Inf.
    Error-mitigated quantum simulation of interacting fermions with trapped ions
    Wentao Chen, Shuaining Zhang, Jialiang Zhang, Xiaolu Su, Yao Lu, Kuan Zhang, Mu Qiao, Ying Li, Jing-Ning Zhang, and Kihwan Kim
    npj Quantum Inf. 9, 122 (2023).
    arXiv HTML
  3. Nat. Phys.
    Scalable and programmable phononic network with trapped ions
    Wentao Chen, Yao Lu, Shuaining Zhang, Kuan Zhang, Guanhao Huang, Mu Qiao, Xiaolu Su, Jialiang Zhang, Jing-Ning Zhang, Leonardo Banchi, M. S. Kim, and Kihwan Kim
    Nat. Phys. 19, 877 (2023).
    arXiv HTML NEWS
  4. Sci. Adv.
    Significant-loophole-free test of Kochen-Specker contextuality using two species of atomic-ions
    Pengfei Wang, Junhua Zhang, Chun-Yang Luan, Mark Um, Ye Wang, Mu Qiao, Tian Xie, Jing-Ning Zhang, Adan Cabello, and Kihwan Kim
    Sci. Adv. 8, eabk1660 (2022).
    arXiv HTML
  5. RMP
    Programmable quantum simulations of spin systems with trapped ions
    C. Monroe, W. C. Campbell, L. -M. Duan, Z. -X. Gong, A. V. Gorshkov, P. W. Hess, R. Islam, K. Kim, N. M. Linke, G. Pagano, P. Richerme, C. Senko, N. Y. Yao
    Rev. Mod. Phys. 93, 025001 (2021).
    arXiv HTML
  6. PRL
    Double-Electromagnetically-Induced-Transparency Ground-State Cooling of Stationary Two-Dimensional Ion Crystals
    Mu Qiao, Wang Ye, Zhengyang Cai, Botao Du, Pengfei Wang, Chunyang Luan, Wentao Chen, Heung-Ryoul Noh, and Kihwan Kim
    Phys. Rev. Lett. 126, 023604 (2021).
    arXiv HTML
  7. Nat. Comm.
    Single ion qubit with estimated coherence time exceeding one hour
    Pengfei Wang, Chun-Yang Luan, Mu Qiao, Mark Um, Junhua Zhang, Ye Wang, Xiao Yuan, Mile Gu, Jingning Zhang, and Kihwan Kim
    Nat. Commun. 12, 233 (2021).
    HTML
  8. Nature
    Global entangling gates on arbitrary ion qubits
    Yao Lu, Shuaining Zhang, Kuan Zhang, Wentao Chen, Yangchao Shen, Jialiang Zhang, Jing-NIng Zhang, and Kihwan Kim
    Nature 572, 363 (2019).
    arXiv HTML
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