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The effect of balanced homodyne detection on continuous variable quantum key distribution

Chen Jin-Jian Han Zheng-Fu Zhao Yi-Bo Gui You-Zhen Guo Guang-Can

The effect of balanced homodyne detection on continuous variable quantum key distribution

Chen Jin-Jian, Han Zheng-Fu, Zhao Yi-Bo, Gui You-Zhen, Guo Guang-Can
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  • Abstract views:  4247
  • PDF Downloads:  1669
  • Cited By: 0
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  • Received Date:  15 April 2006
  • Accepted Date:  16 May 2006
  • Published Online:  08 January 2007

The effect of balanced homodyne detection on continuous variable quantum key distribution

  • 1. 中国科学技术大学,中科院量子信息重点实验室,合肥 230026

Abstract: Different from single photon quantum key distribution, continuous variable quantum key distribution uses the balanced homodyne detection. In this paper, the detection error of balanced homodyne caused by vacuum noise of the local light and unbalance of beam splitter is analyzed, the maximal safe distance limited by the electronic noise of balance homodyne detector is given, finally, the relationship between the noise of balanced homodyne detection and key rate are shown.

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