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Stable quantum key distribution with polarization control

Chen Jie Li Yao Wu Guang Zeng He-Ping

Stable quantum key distribution with polarization control

Chen Jie, Li Yao, Wu Guang, Zeng He-Ping
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  • PDF Downloads:  1165
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Publishing process
  • Received Date:  20 November 2006
  • Accepted Date:  23 January 2007
  • Published Online:  20 September 2007

Stable quantum key distribution with polarization control

  • 1. 华东师范大学光谱学与波谱学教育部重点实验室, 上海 200062

Abstract: In this paper, we promote a principle of polarization feedback which keeps polarization states stable in long-distance fiber. It is quite difficult to realize long-term stable quantum key distribution (QKD) with polarization encoding due to the effect of irregular polarization fluctuation in single mode fiber. We have designed a polarization feedback control system to compensate for the birefringence. And a polarization encoded QKD experiment has been realized in 100km fiber.

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