Gigahertz quantum key distribution with 1 Mbit/s secure key rate using decoy pulses

A. R. Dixon, Zhiliang L. Yuan, J. F. Dynes +2 more

We report the first gigahertz clocked decoy-protocol quantum key distribution (QKD). Record key rates have been achieved thanks to the use of self-differencing InGaAs avalanche photodiodes designed specifically for high speed single photon detection. The system is characterized with a secure key rate of 1.02 Mbit/s for a fiber distance of 20 km and 10.1 kbit/s for 100 km. As the present advance relies upon compact non-cryogenic detectors, it opens the door towards practical and low cost QKD systems to secure broadband communication in future.

Gordon, Fernandez, Buller +2 more

Verónica Fernández

A. R. Dixon, Zhiliang L. Yuan, J. F. Dynes +2 more

Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text A. R. Dixon, Z. L. Yuan, J. F. Dynes, A. W. Sharpe, and A. J. Shields, "Gigahertz Quantum Key Distribution With 1 Mbit/s Secure Key Rate Using Decoy Pulses," in Optical Fiber Communication Conference and National Fiber Optic Engineers Conference, OSA Technical Digest (CD) (Optica Publishing Group, 2009), paper OThL3. Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article

Alessandro Restelli

Zhiliang L. Yuan, A. R. Dixon, J. F. Dynes +3 more

We report the use of compact InGaAs avalanche photodiodes in the first gigahertz decoy‐protocol quantum key distribution to achieve a record secure key rate exceeding 1 Mbit/s for a fibre distance of 20 km.