scholarly journals High-Rate Quantum Key Distribution with Superconducting Nanowire Single Photon Detectors

2010 ◽  
Author(s):  
Eric A. Dauler ◽  
Neal W. Spellmeyer ◽  
Andrew J. Kerman ◽  
Richard J. Molnar ◽  
Karl K. Berggren ◽  
...  
Keyword(s):  
Quantum Key Distribution ◽  
Single Photon ◽  
Key Distribution ◽  
High Rate ◽  
Photon Detectors ◽  
Single Photon Detectors ◽  
Superconducting Nanowire

scholarly journals Quantum key distribution over a 40-dB channel loss using superconducting single-photon detectors

2007 ◽  
Vol 1 (6) ◽  
pp. 343-348 ◽  
Author(s):  
Hiroki Takesue ◽  
Sae Woo Nam ◽  
Qiang Zhang ◽  
Robert H. Hadfield ◽  
Toshimori Honjo ◽  
...  
Keyword(s):  
Quantum Key Distribution ◽  
Single Photon ◽  
Key Distribution ◽  
Photon Detectors ◽  
Single Photon Detectors ◽  
Channel Loss

An Analysis of Single-Photon Detectors in an Environmentally Robust GigaHertz Clock Rate Quantum Key Distribution System

2011 ◽  
Author(s):  
Patrick J. Clarke ◽  
Robert J. Collins ◽  
Aongus McCarthy ◽  
Nils J. Krichel ◽  
María-José García-Martínez ◽  
...  
Keyword(s):  
Distribution System ◽  
Quantum Key Distribution ◽  
Single Photon ◽  
Key Distribution ◽  
Clock Rate ◽  
Photon Detectors ◽  
Single Photon Detectors

scholarly journals Security analysis of the time-coding quantum key distribution protocols

2011 ◽  
Vol 11 (11&12) ◽  
pp. 968-987
Author(s):  
Thierry Debuisschert ◽  
Simon Fossier
Keyword(s):  
Mathematical Model ◽  
Quantum Key Distribution ◽  
Single Photon ◽  
Photon Number ◽  
Security Analysis ◽  
Key Distribution ◽  
Low Noise ◽  
Photon Detectors ◽  
Single Photon Detectors ◽  
Time Coding

We report the security analysis of time-coding quantum key distribution protocols. The protocols make use of coherent single-photon pulses. The key is encoded in the photon time-detection. The use of coherent superposition of states allows to detect eavesdropping of the key. We give a mathematical model of a first protocol from which we derive a second, simpler, protocol. We derive the security analysis of both protocols and find that the secure rates can be similar to those obtained with the BB84 protocol. We then calculate the secure distance for those protocols over standard fibre links. When using low-noise superconducting single photon detectors, secure distances over 200 km can be foreseen. Finally, we analyse the consequences of photon-number splitting attacks when faint pulses are used instead of single photon pulses. A decoy states technique can be used to prevent such attacks.

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