The experimental research on a stable free-space quantum key distribution system with low noise | Zendy

Wang Jin-Dong | Zendy; Wei Lü | Zendy; Zhao Feng | Zendy; Liu Xiao-bao | Zendy; Banghong Guo | Zendy; Jing Zhang | Zendy; Huang Yu-Xian | Zendy; Lu Yi-Qun | Zendy; Songhao Liu | Zendy

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The experimental research on a stable free-space quantum key distribution system with low noise

Author(s) -

Wang Jin-Dong,

Wei Lü,

Zhao Feng,

Liu Xiao-bao,

Banghong Guo,

Jing Zhang,

Huang Yu-Xian,

Lu Yi-Qun,

Songhao Liu

Publication year - 2008

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.57.4214

Subject(s) - quantum key distribution , noise (video) , faraday cage , phase noise , quantum noise , michelson interferometer , optics , physics , differential phase , free space , laser , interferometry , quantum , computer science , phase (matter) , quantum mechanics , artificial intelligence , image (mathematics) , magnetic field

A free-space quantum key distribution system is demonstrated experimentally which makes use of polarized coherent short laser pulses and the differential phase shift scheme with a Faraday-Michelson interferometer. The system features low noise, high stability and low bit-error rate. In the proposed experimental scheme, polarizated short laser pulse of several nanoseconds duration is made to transmit through the free space to decrease noise and a low bit-error rate less than 6% is achieved.

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