Practical fiber-optic quantum key distribution

  • Subject
    Practical fiber-optic quantum key distribution
  • Date
    December 21, 5:00 pm
  • Speaker
    Dr. Zhiliang Yuan (Chief Scientist, Beijing Academy of Quantum Information Sciences)
  • Place

In this talk, the author will review recent advances in fiber optic quantum key distribution (QKD), including high bit rate systems [1], coherent laser seeding based transmitter [2] as well as its photonic integration [3], and ultra-long distance quantum communication using twin coherent fields [4,5]. 


[1] Z. L. Yuan et al., “10 Mb/s quantum key distribution,” J. Lightwave Technol. 36, 3427 (2018). 

[2] Z. L. Yuan et al., “Directly phase-modulated light source,” Phys. Rev. X 6, 031044 (2016). 

[3] T. K. Paraïso et al., “A photonic integrated quantum secure communication system,” Nature Photon. 15, 850-856 (2021). 

[4] M. Lucamarini et al., “Overcoming the rate-distance limit of quantum key distribution without quantum repeater,” Nature 557, 400–403 (2018).

[5] M. Pittaluga & M. Minder et al., “600 km repeater-like quantum communication with dual-band stabilisation,” Nature Photon. 15, 530 – 535 (2021).




Dr. Zhiliang Yuan received his doctoral and post-doctoral training from Institute of Semiconductors, Chinese Academy of Sciences (1993 - 1997) and University of Oxford (1997-2001), respectively. He then spent 20-years at Toshiba Cambridge Research Laboratory before taking up the prestigious appointment as Chief Scientist at Beijing Academy of Quantum Information Sciences (BAQIS).

He is renowned for high-speed quantum key distribution (QKD), with notable achievements including the first 100 km (2003) and 600km (2020) fiber communication distances as well as the first 1 Mbit/s (2008) and 10 Mbit/s (2018) QKD systems. His other contributions include the first single photon LED (2001), self-differencing detectors (2006), directly phase-modulated source (2015) and twin-field QKD protocol (2017). He has published 130+ refereed journal publications, 130+ conference papers including 40+ invited/post-deadline, and 50+ patents.

Show List