Experimental demonstration of high-rate Gaussian-modulated continuous-variable quantum key distribution with a local-local oscillator

Yaodi Pi; Heng Wang; Yan Pan; Yun Shao; Wei Huang; Yang Li; Bingjie Xu

doi:10.1117/12.2601422

9 October 2021 Experimental demonstration of high-rate Gaussian-modulated continuous-variable quantum key distribution with a local-local oscillator

Yaodi Pi, Heng Wang, Yan Pan, Yun Shao, Wei Huang, Yang Li, Bingjie Xu

Author Affiliations +

Proceedings Volume 11905, Quantum and Nonlinear Optics VIII; 1190515 (2021) https://doi.org/10.1117/12.2601422
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

Conference Poster

Abstract

In this paper, a high-rate Gaussian-modulated coherent-state (GMCS) continuous-variable quantum key distribution (CV-QKD) scheme with a local local oscillator is experimentally demonstrated. The transmission of quantum signal and pilot tone in optical fiber adopts frequency and polarization multiplexing technology. By optimizing frequency bandwidth, modulation variance and intensity of the pilot tone, the CVQKD system is demonstrated at different metropolitan distance, and the secure key rate of 13.53Mbps, 8.24Mbps, 5.39Mbps 3.66Mbps and 2.55Mbps over transmission distance of 5km, 10km, 15km, 20km and 25km are obtained, respectively.

Conference Presentation

Citation Download Citation

Yaodi Pi, Heng Wang, Yan Pan, Yun Shao, Wei Huang, Yang Li, and Bingjie Xu "Experimental demonstration of high-rate Gaussian-modulated continuous-variable quantum key distribution with a local-local oscillator", Proc. SPIE 11905, Quantum and Nonlinear Optics VIII, 1190515 (9 October 2021); https://doi.org/10.1117/12.2601422

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