Continuous-variable measurement-device-independent quantum key distribution with photon subtraction

Hong-Xin Ma, Peng Huang, Dong-Yun Bai, Shi-Yu Wang, Wan-Su Bao, and Gui-Hua Zeng
Phys. Rev. A 97, 042329 – Published 17 April 2018

Abstract

It has been found that non-Gaussian operations can be applied to increase and distill entanglement between Gaussian entangled states. We show the successful use of the non-Gaussian operation, in particular, photon subtraction operation, on the continuous-variable measurement-device-independent quantum key distribution (CV-MDI-QKD) protocol. The proposed method can be implemented based on existing technologies. Security analysis shows that the photon subtraction operation can remarkably increase the maximal transmission distance of the CV-MDI-QKD protocol, which precisely make up for the shortcoming of the original CV-MDI-QKD protocol, and one-photon subtraction operation has the best performance. Moreover, the proposed protocol provides a feasible method for the experimental implementation of the CV-MDI-QKD protocol.

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  • Received 14 November 2017

DOI:https://doi.org/10.1103/PhysRevA.97.042329

©2018 American Physical Society

Physics Subject Headings (PhySH)

Quantum Information, Science & Technology

Authors & Affiliations

Hong-Xin Ma1,2, Peng Huang3,*, Dong-Yun Bai3, Shi-Yu Wang3, Wan-Su Bao1,2, and Gui-Hua Zeng3

  • 1Zhengzhou Information Science and Technology Institute, Zhengzhou 450004, China
  • 2Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
  • 3State 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, Shanghai Jiao Tong University, Shanghai 200240, China

  • *Corresponding author: huang.peng@sjtu.edu.cn

See Also

Continuous-variable measurement-device-independent quantum key distribution with virtual photon subtraction

Yijia Zhao, Yichen Zhang, Bingjie Xu, Song Yu, and Hong Guo
Phys. Rev. A 97, 042328 (2018)

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Vol. 97, Iss. 4 — April 2018

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