Decoy State Quantum Key Distribution With Modified Coherent State

Zhen-Qiang Yin; Zheng-Fu Han; Fang-Wen Sun; Guang-Can Guo

doi:10.1103/PhysRevA.76.014304

Decoy State Quantum Key Distribution With Modified Coherent State

Quantum Physics 2009-11-13 v1

Authors: Zhen-Qiang Yin , Zheng-Fu Han , Fang-Wen Sun , Guang-Can Guo

Journal reference: PHYSICAL REVIEW A 76, 014304 (2007)

Comments: 4 pages, 4 figures

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

To beat PNS attack, decoy state quantum key distribution (QKD) based on coherent state has been studied widely. We present a decoy state QKD protocol with modified coherent state (MCS). By destruction quantum interference, MCS with fewer multi-photon events can be get, which may improve key bit rate and security distance of QKD. Through numerical simulation, we show about 2-dB increment on security distance for BB84 protocol.

Keywords

quantum key distribution quantum cryptography quantum error correction

Cite

@article{arxiv.0704.3833,
  title  = {Decoy State Quantum Key Distribution With Modified Coherent State},
  author = {Zhen-Qiang Yin and Zheng-Fu Han and Fang-Wen Sun and Guang-Can Guo},
  journal= {arXiv preprint arXiv:0704.3833},
  year   = {2009}
}

Related papers

View all related →