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Security Simulation of Continuous-Variable Quantum Key Distribution over Air-to-Water Channel Using Monte Carlo Method |
| Cai-Lang Xie1, Ying Guo1,2, Yi-Jun Wang1, Duan Huang1, Ling Zhang1** |
1School of Information Science and Engineering, Central South University, Changsha 410083
2School of IOT Engineering, Taihu University, Wuxi 214064
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| Cite this article: |
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Cai-Lang Xie, Ying Guo, Yi-Jun Wang et al 2018 Chin. Phys. Lett. 35 090302 |
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Abstract Considering the ocean water's optical attenuation and the roughness of the sea surface, we analyze the security of continuous-variable (CV) quantum key distribution (QKD) based air-to-water channel. The effects of the absorption and scattering on the transmittance of underwater quantum channel and the maximum secure transmission distance are studied. Considering the roughness of the sea surface, we simulate the performance bounds of CV QKD with different wind speeds using the Monte Carlo method. The results show that even if the secret key rate gradually reduces as the wind speed increases, the maximum transmission distance will not be affected obviously. Compared to the works regarding short-distance underwater optical communication, our research represents a significant step towards establishing secure communication between air platform and submarine vehicle.
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Received: 12 March 2018
Published: 29 August 2018
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| PACS: |
03.67.Dd
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(Quantum cryptography and communication security)
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03.67.Hk
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(Quantum communication)
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42.50.Ex
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(Optical implementations of quantum information processing and transfer)
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| Fund: Supported by the National Natural Science Foundation of China under Grant No 61572529. |
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