Peng, Xiang

Associate Professor

Research Interests: Quantum magnetometry, quantum cryptography

Office Phone: 86-10-6276 1192

Email: xiangpeng@pku.edu.cn

Peng, Xiang is an associate professor in the Department of Electronics, School of EECS. He obtained his B.Sc. from Wuhan University in 2002, and Ph.D. from Peking University in 2009 respectively. His research focuses on quantum information technology, especially the theory and experiment in quantum magnetometry and quantum cryptography.

Dr. Peng has published 31 SCI papers, 5 invention patents officially authorized and one academic monograph. He was awarded “Young Scientist Award” by the International Union of Radio Science (2011).

Dr. Peng took charge of two NSFC programs and one 863 key project. His research achievements are summarized as follows:

1)  Quantum magnetometry. Aiming at solving quantum noise (light-shift noise or spin-projection noise) which limits the sensitivity improvement of quantum magnetometer, quantum-control methods and key technologies of long-coherence atomic cell (such as paraffin-coated alkali cell or Helium-3/4 cell), narrow-linewidth low-noise laser source with stabilized frequency and low-noise digital lock-in amplifier have been developed. Furthermore, the experimental platform and system for high-sensitivity quantum magnetometer have been designed and built. The research achievement was selected and shown in 12th Five-Year National Science and Technology Innovation Achievement Exhibition and some techniques have been applied in commercial equipment.

2)  Quantum cryptography. The research devotes to the security in practical quantum-key-distribution system including untrusted source, quantum number generator and quantum detection and develops the quantum-key-distribution system with untrusted-source monitor and close the security loopholes in practical system [refer to Book: “Quantum Cryptography,” Hong Guo, Zhengyu Li, and Xiang Peng, National Defense Industry Press, 2017] .