Mr. Sheng Wang Profile

Sheng Wang

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Proceedings Article | 16 January 2024 Paper

Parameter estimation for free-space continuous variable quantum key distribution based on PointNet

Cheng Guan, Rui Chen, Hao Zhang, Sheng Wang

Proceedings Volume 12973, 129730F (2024) https://doi.org/10.1117/12.3015359

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Free-space continuous variable quantum key distribution has attracted attention due to its ability to provide a more widely available transmission channel. However, the key rate of free-space continuous variable quantum key distribution itself is not high, and a portion of the original key needs to be allocated for parameter estimation. In this article, we analyze the spatial correlation of free-space continuous variable quantum key distribution and propose the use of a nearby system to transmit an inexpensive signal. Parameter estimation is performed using a deep learning model to predict and reduce the amount of original key used for parameter estimation, thereby improving the key rate.

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