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Continuous-variable quantum key distribution based on continuous random basis choice |
| Weiqi Liu(刘维琪)1, Jinye Peng(彭进业)1, Peng Huang(黄鹏)2, Shiyu Wang(汪诗寓)2, Tao Wang(王涛)2, Guihua Zeng(曾贵华)1,2 |
1 College of Information Science and Technology, Northwest University, Xi'an 710127, China;
2 State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Key Laboratory on Navigation and Location-based Service, and Center of Quantum Information Sensing and Processing(QSIP), Shanghai Jiao Tong University, Shanghai 200240, China |
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Abstract Gaussian-modulated coherent state quantum key distribution is gradually moving towards practical application. Generally, the involved scheme is based on the binary random basis choice. To improve the performance and security, we present a scheme based on a continuous random basis choice. The results show that our scheme obviously improves the performance, such as the secure communication distance. Our scheme avoids comparing the measurement basis and discarding the key bits, and it can be easily implemented with current technology. Moreover, the imperfection of the basis choice can be well removed by the known phase compensation algorithm.
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Received: 12 March 2018
Revised: 08 April 2018
Accepted manuscript online:
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PACS:
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03.67.Hk
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(Quantum communication)
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03.67.Dd
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(Quantum cryptography and communication security)
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03.67.-a
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(Quantum information)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61332019, 61671287, and 61631014), Northwest University Doctorate Dissertation of Excellence Funds, China (Grant No. YYB17022), and the National Key Research and Development Program, China (Grant No. 2016YFA0302600). |
Corresponding Authors:
Peng Huang, Guihua Zeng
E-mail: huang.peng@sjtu.edu.cn;ghzeng@sjtu.edu.cn
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Cite this article:
Weiqi Liu(刘维琪), Jinye Peng(彭进业), Peng Huang(黄鹏), Shiyu Wang(汪诗寓), Tao Wang(王涛), Guihua Zeng(曾贵华) Continuous-variable quantum key distribution based on continuous random basis choice 2018 Chin. Phys. B 27 070305
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