Improve the Maximum Transmission Distance of Four-State Continuous Variable Quantum Key Distribution by using a Noiseless Linear Amplifier

Bingjie Xu; Chunming Tang; Hui Chen; Wenzheng Zhang; Fuchen Zhu

doi:10.1103/PhysRevA.87.062311

Improve the Maximum Transmission Distance of Four-State Continuous Variable Quantum Key Distribution by using a Noiseless Linear Amplifier

Quantum Physics 2016-07-08 v1

Authors: Bingjie Xu , Chunming Tang , Hui Chen , Wenzheng Zhang , Fuchen Zhu

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Abstract

A modified four-state CVQKD protocol is proposed to increase the maximum transmission distance and tolerable excess noise in the presence of Gaussian lossy and noisy channel by using a noiseless linear amplifier (NLA). A NLA with amplitude gain g can increase the maximum admission losses by 20log(g) dB.

Keywords

parametric amplifier

Cite

@article{arxiv.1210.0107,
  title  = {Improve the Maximum Transmission Distance of Four-State Continuous Variable Quantum Key Distribution by using a Noiseless Linear Amplifier},
  author = {Bingjie Xu and Chunming Tang and Hui Chen and Wenzheng Zhang and Fuchen Zhu},
  journal= {arXiv preprint arXiv:1210.0107},
  year   = {2016}
}

Comments

6 pages, 5 figures

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