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

Applied Sciences

Qingquan Peng¹  Xiaodong Wu¹  Ying Guo¹ 

[1] School of Automation, Central South University, Changsha 410083, China;

关键词: quantum key distribution;    eight-state continuous-variable protocol;    photon subtraction;   

DOI  :  10.3390/app9071333

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown