Speaker Bio:

Pei Zeng is currently a postdoctoral researcher at the Pritzker School of Molecular Engineering, University of Chicago. Prior to this, He was a visiting scholar at the University of Science and Technology of China in 2021. He completed a Ph.D. and B.Sc. at Tsinghua University (2020) and Nanjing University (2016), respectively. He also serves as an editor for Quantum Journal. He has published 16 papers in journals such as Nature Photonics, Nature Communications, PRX, PRL, and PRX Quantum. Additionally, he has delivered talks at leading conferences, including TQC, AQIS, QCrypt, QSim, and the IEEE Photonics Conference.

Abstract:

On one hand, the noise in quantum hardware can degrade quantum information, potentially making it classically simulatable. On the other hand, many quantum applications are proposed based on ideal quantum circuits, without considering the noise structure and hardware limitations.

In this talk, we discuss how to bridge the gap between quantum applications and quantum hardware through careful quantum code and protocol design.

For quantum communication, we demonstrate how quantum key distribution protocols can be tailored to different scenarios [1,2,3,4] by employing appropriate encoding methods.

For quantum computing, we construct the robust shadow estimation protocol to learn the property of quantum states [5] and propose quantum simulation algorithms [5] that significantly reduce resource overhead, making them suitable for implementation on early fault-tolerant quantum hardware especially on the one based on bosonic codes [6].

Ultimately, the co-design of quantum applications, quantum codes, and quantum hardware will make quantum information processing more accessible in the near future.

References:

[1] X. Ma, P. Zeng, and H. Zhou, Phys. Rev. X, 8, 031043 (2018)

[2] X.-T. Fang*, P. Zeng*, H. Liu*, et al, Nature Photonics, 14, 422–425, (2020)

[3] P. Zeng, H. Zhou, W. Wu, and X. Ma, Nature Communications, 13, 1, 1–11, (2022)

[4] A. Jin, X. Zhang, L. Jiang, R. V. Penty, and P. Zeng#, arXiv: 2309.03789 (AQIS 2024)

[5] S. Chen, W. Yu, P. Zeng#, and S. Flammia, PRX Quantum, 2, 030348 (2021)

[6] P. Zeng, J. Sun, L. Jiang, and Q. Zhao, arXiv: 2212.04566 (QSim 2023)

[7] Q. Xu, P. Zeng, D. Xu, and L. Jiang, Phys. Rev. X, 14, 031016 (2024)