Robust Quantum Information Group

Make quantum information processing practical and useful in the near future.

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The Robust Quantum Information (RobustQI) Group at Shanghai Jiao Tong University focuses on building the theoretical foundations for reliable and scalable quantum technologies. Our research spans the following pillars:

  • Quantum Communication & Cryptography: We design high-performance protocols, such as mode-pairing QKD, to surpass the linear rate-transmittance bound.
  • Quantum Error Correction (QEC): We develop fault-tolerant architectures and encoding schemes compatible with practical hardware, including bosonic qubits.
  • Quantum Algorithms: We design efficient quantum algorithms for scientific computing, focusing on early fault-tolerant simulation and high-precision eigenstate problems.
  • Verification & Learning: We work on efficient benchmarking and characterization of quantum states and channels to ensure the reliability of quantum devices.

About the PI

Pei Zeng (曾培) is a Tenure-track Associate Professor at the Institute of Natural Sciences, Shanghai Jiao Tong University. Before joining SJTU, he was a Postdoctoral Scholar at the University of Chicago, working with Prof. Liang Jiang. He received his Ph.D. from Tsinghua University under the supervision of Prof. Xiongfeng Ma, and his B.Sc. from Nanjing University. He also serves the community as an Editor for Quantum journal.

news

Mar 05, 2026 Congradulate Dr. Pei Zeng from robust QI group to receive the 2026 APS Outstanding Referee award!
Jan 27, 2026 Dr. Pei Zeng from robust QI group gived a lecture about “Introduction to Quantum Error Correction” in a Quantum Scientific Computing winter school at INS, SJTU.
Jan 20, 2026 Welcome Zhenyu Du from IIIS, Tsinghua University to visit our group and give us a talk about From Local Measurements to Global Certification in Many-Body Quantum Systems.
Jan 05, 2026 Welcome Prof. Jinpeng Liu to visit our group and give a talk entitled Towards Practical Quantum Simulation of Non-unitary Dynamics at INS, SJTU!

selected publications

  1. High-precision and low-depth quantum algorithm design for eigenstate problems
    Jinzhao Sun, Pei Zeng*, Tom Gur, and M. S. Kim
    Science Advances, 2026
  2. Simple and High-Precision Hamiltonian Simulation by Compensating Trotter Error with Linear Combination of Unitary Operations
    Pei Zeng, Jinzhao Sun, Liang Jiang, and Qi Zhao
    PRX Quantum, Mar 2025
  3. Pilot-reference-free continuous-variable quantum key distribution with efficient decoy-state analysis
    Anran Jin, Xingjian Zhang, Liang Jiang, Richard V. Penty, and Pei Zeng*
    Photonics Research, 2025
  4. Fault-Tolerant Operation of Bosonic Qubits with Discrete-Variable Ancillae
    Qian Xu, Pei Zeng, Daohong Xu, and Liang Jiang
    Phys. Rev. X, Jul 2024
  5. Mode-pairing quantum key distribution
    Pei Zeng, Hongyi Zhou, Weijie Wu, and Xiongfeng Ma
    Nature communications, 2022
  6. Quantum Complementarity Approach to Device-Independent Security
    Xingjian Zhang, Pei Zeng, Tian Ye, Hoi-Kwong Lo, and Xiongfeng Ma
    Phys. Rev. Lett., Oct 2023
  7. Robust Shadow Estimation
    Senrui Chen, Wenjun Yu, Pei Zeng*, and Steven T. Flammia
    PRX Quantum, Sep 2021
  8. Single-Copies Estimation of Entanglement Negativity
    You Zhou, Pei Zeng*, and Zhenhuan Liu
    Phys. Rev. Lett., Nov 2020
  9. Implementation of quantum key distribution surpassing the linear rate-transmittance bound
    Xiao-Tian Fang, Pei Zeng, Hui Liu, Mi Zou, Weijie Wu, and 6 more authors
    Nature Photonics, 2020
  10. Phase-Matching Quantum Key Distribution
    Xiongfeng Ma, Pei Zeng, and Hongyi Zhou
    Phys. Rev. X, Aug 2018