Abstract

In this paper, we examine how the combination of zero-photon catalysis (ZPC) and a quantum scissors (QS) intensifies the range and the fidelity of a continuous-variable quantum key distribution CV-QKD protocol. Using a non-Gaussian calculation, we realized that the QS significantly boosts the range of the protocol and enhances its fidelity at long distances. At negligible values of excess noise, ZPC operation leads to incredibly high fidelity values, even at large distances. In this case, an optimal strength of the ZPC operation exists that maximizes the secure distance of the protocol. Finally, our study of a system with a nonzero value of excess noise reveals that the fidelity generally increases with ZPC, as opposed to the range, which decreases with this Gaussian operation.

© 2023 Optica Publishing Group

Zero-photon catalysis based eight-state discrete modulated measurement-device-independent continuous-variable quantum key distribution

Muhammad Bilal Khan, Muhammad Waseem, Muhammad Irfan, Asad Mehmood, and Shahid Qamar
J. Opt. Soc. Am. B 40(4) 763-772 (2023)

Discrete-modulation measurement-device-independent continuous-variable quantum key distribution with a quantum scissor: exact non-Gaussian calculation

Khatereh Jafari, Mojtaba Golshani, and Alireza Bahrampour
Opt. Express 30(7) 11400-11423 (2022)

Improvement of self-referenced continuous-variable quantum key distribution with quantum photon catalysis

Wei Ye, Hai Zhong, Qin Liao, Duan Huang, Liyun Hu, and Ying Guo
Opt. Express 27(12) 17186-17198 (2019)

Continuous variable quantum key distribution with multi-mode signals for noisy detectors

Rupesh Kumar, Xinke Tang, Adrian Wonfor, Richard Penty, and Ian White
J. Opt. Soc. Am. B 36(3) B109-B115 (2019)

Performance analysis for OFDM-based multi-carrier continuous-variable quantum key distribution with an arbitrary modulation protocol

Heng Wang, Yan Pan, Yun Shao, Yaodi Pi, Ting Ye, Yang Li, Tao Zhang, Jinlu Liu, Jie Yang, Li Ma, Wei Huang, and Bingjie Xu
Opt. Express 31(4) 5577-5592 (2023)