Paper

Decoy State Quantum Key Distribution via Beam-Wandering Modeled Atmosphere Channel*

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©2016 Chinese Physical Society and IOP Publishing Ltd
, , Citation Sheng-Li Zhang et al 2016 Chinese Phys. Lett. 33 120302 DOI 10.1088/0256-307X/33/12/120302

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victory8@mail.ustc.edu.cn

Author affiliations

1 The PLA Information Engineering University, Zhengzhou 450004

2 Key Laboratory of Quantum information, University of Science and Technology of China, Hefei 230026

Dates

  1. Received 22 August 2016
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0256-307X/33/12/120302

Abstract

We investigate the decoy state quantum key distribution via the atmosphere channels. We consider the efficient decoy state method with one-signal state and two-decoy states. Our results show that the decoy state method works even in the channels with fluctuating transmittance. Nevertheless, the key generation rate will be dramatically decreased by atmosphere turbulence, which sheds more light on the characterization of atmosphere turbulence in realistic free-space based quantum key distributions.

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Footnotes

  • * 

    Supported by the National Natural Science Foundation of China under Grant Nos 11574400, U1304613, 11204197, 11204379 and 11074244, the National Basic Research Program of China under Grant No 2011CBA00200, and the Doctor Foundation of the Ministry of Education of China under Grant No 20113402110059.

10.1088/0256-307X/33/12/120302