Gigahertz quantum cryptography

Gerald S. Buller, Robert J. Collins, Patrick J. Clarke, Paul D. Townsend

Research output: Chapter in Book/Report/Conference proceedingConference contribution


This paper describes progress in gigahertz-clocked quantum key distribution systems. It details current advances in both point-to-point and network applications. We will discuss possibilities for practical quantum key distribution using single-photon sources, and discuss the experimental system performance of GHz-clocked quantum key distribution systems focusing on issues of quantum bit error rate, net bit rate and transmission distance with different detector structures, concentrating on single-photon avalanche diode detectors, but also examining superconducting nanowire-based structures. The quantum key distribution system is designed to be environmentally robust and an examination of long-term system operation will be presented.

Original languageEnglish
Title of host publicationOptical Transmission Systems, Switching, and Subsystems VIII
Publication statusPublished - 2011
EventOptical Transmission Systems, Switching, and Subsystems VIII - Shanghai, China
Duration: 8 Dec 201012 Dec 2010


ConferenceOptical Transmission Systems, Switching, and Subsystems VIII


  • Optical communications
  • Quantum information
  • Quantum key distribution
  • Silicon SPADS


Dive into the research topics of 'Gigahertz quantum cryptography'. Together they form a unique fingerprint.

Cite this