Continuous variable quantum key distribution method based on coherent optical communication system
A quantum key distribution and coherent optical communication technology, applied to key distribution, can solve the problems of low cost and inability to effectively suppress excessive noise, and achieve the effect of improving efficiency, improving channel utilization, and ensuring absolute security
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[0038] In this embodiment, a continuous variable quantum key distribution method based on a coherent optical communication system of the present invention includes the following steps:
[0039] Step 1: Superimpose the quantum signal on the coherent optical communication signal to realize the synchronous transmission of the coherent optical communication signal and the quantum signal;
[0040] Step 2: For the carrier phase drift problem in the receiving process, carry out carrier recovery through digital signal processing, and realize the separation of coherent optical communication signals and quantum signals.
[0041] Next, the present invention will be described in detail.
[0042] The purpose of the present invention is to provide a continuous variable quantum key distribution method based on a coherent optical communication system, which can meet the requirements of quantum key distribution, effectively reduce the cost of quantum key distribution, and simultaneously improv...
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