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Teaching Staff

Professor LO, Hoi-Kwong

Professor LO, Hoi-Kwong

Professor: Chair of Physics, Department of Physics, Faculty of Science, HKU

B. A. (Cantab), 1989, M.S., 1991 , Ph.D. (Caltech) 1994; FAPS, FOSA

  • 2859 2368
  • 2559 9152
  • Room 530, CYM Physics Building, The University of Hong Kong, Pokfulam Road, Hong Kong

Research Interest

  • Quantum Information

  • Quantum Cryptography

  • Quantum Internet

  • Quantum Computing

  • Quantum Optics

  • Quantum Communication


Current Research

  • Quantum key distribution (both theory and experiment)
  • All photonics quantum repeaters
  • Quantum Internet 


Awards and Honours

  • Fellow of the Optical Society (OSA) (2019)
  • Fellow of the American Physical Society (APS Fellow) (2018)
  • OYRA (Outstanding Young Researcher Award) by the OCPA(Overseas Chinese Physicists Association) (2003)
  • Canada Research Chair (2003)
  • PREA (Premier’s Research Excellence Award) (2003)


Representative Publications

Five publications in recent 5 years:

  • F. Xu, X. Ma. Q. Zhang, H.-K. Lo, and J.-W. Pan, Reviews of Modern Physics 92, 025002 (2020). Secure quantum key distribution with realistic devices.
  • X. Zhong, J. Hu, M. Curty, L. Qian, and H.-K. Lo, Phys. Rev. Lett. 123, 100506 (2019). Proof-of-Principle Experimental Demonstration of Twin-Field Type Quantum Key Distribution.
  • M. Curty, K. Azuma, H.-K. Lo, npj Quantum Informationvolume 5, Article number: 64 (2019). Simple security proof of twin-field type quantum key distribution protocol.
  • W. Wang, F. Xu, and H.-K. Lo, Phys. Rev. X 9, 041012 (2019). Asymmetric protocols for scalable high-rate measurement-device-independent quantum key distribution networks.
  • K. Azuma, K. Tamaki and H.-K. Lo, Nature Communications 6, Article number: 6787 (2015). All photonics quantum repeaters.


Five publications beyond recent 5 years:

  • H.-K. Lo, M. Curty, and B. Qi, Phys. Rev. Lett. 108, 130503 (2012). Measurement-Device-Independent Quantum Key Distribution.
  • H.-K. Lo, X. Ma, and K. Chen, Phys. Rev. Lett. 94, 230504 (2005). Decoy State Quantum Key Distribution.
  • D. Gottesman, H.-K. Lo, N. Lutkenhaus, and J. Preskill, Quantum Inf. And Comput. Vol. 4, No.5, 325-360 (2004). Security of quantum key distribution with imperfect Devices.
  • R. Cleve, D. Gottesman and H.-K. Lo, Physical Review Letters Vol. 83, 648 (1999). How to Share a Quantum Secret.
  • H.-K. Lo and H. F. Chau, Science Vol. 283, 2050 (1999). Unconditional Security of Quantum Key Distribution over Arbitrarily Long Distances.