Single photon quantum key distribution with continuous variables

2006 ◽  
Author(s):  
Lijian Zhang ◽  
Ian A. Walmsley ◽  
Christine Silberhorn
Keyword(s):  
Quantum Key Distribution ◽  
Single Photon ◽  
Key Distribution ◽  
Continuous Variables

scholarly journals Improving Eight-State Continuous Variable Quantum Key Distribution by Applying Photon Subtraction

2019 ◽  
Vol 9 (7) ◽  
pp. 1333 ◽  
Author(s):  
Qingquan Peng ◽  
Xiaodong Wu ◽  
Ying Guo
Keyword(s):  
Quantum Key Distribution ◽  
Single Photon ◽  
Key Distribution ◽  
Continuous Variable ◽  
Quantum States ◽  
Continuous Variables ◽  
Subtraction Method ◽  
Photon Subtraction ◽  
Channel Loss ◽  
Simulation Results

We propose a new method to effectively improve the performance of a quantum key distribution with eight-state continuous variables by the photon subtraction method. This operation is effective in increasing and distilling Gaussian entanglement between quantum states, and can be easily realized by existing technology. Simulation results show that the channel-loss tolerance of the eight-state continuous variable quantum key distribution (CVQKD) protocol can be extended by the appropriate photon subtraction algorithm; namely, single-photon subtraction.

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

Asymmetric-Channel Quantum Key Distribution Based on Heralded Single-Photon Sources

2018 ◽  
Vol 38 (3) ◽  
pp. 0327001
Author(s):  
何业锋 He Yefeng ◽  
宋畅 Song Chang ◽  
李东琪 Li Dongqi ◽  
康丹娜 Kang Danna
Keyword(s):  
Quantum Key Distribution ◽  
Single Photon ◽  
Key Distribution ◽  
Asymmetric Channel ◽  
Photon Sources
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