Measurement-device-independent quantum key distribution with uncharacterized qubit sources

Zhen-Qiang Yin, Chi-Hang Fred Fung, Xiongfeng Ma, Chun-Mei Zhang, Hong-Wei Li, Wei Chen, Shuang Wang, Guang-Can Guo, and Zheng-Fu Han
Phys. Rev. A 88, 062322 – Published 18 December 2013

Abstract

Measurement-device-independent quantum key distribution (MDIQKD) is proposed to be secure against any possible detection attacks. The security of the original proposal relies on the assumption that the legitimate users can fully characterize the encoding systems including sources. Here, we propose a MDIQKD protocol where we allow uncharacterized encoding systems as long as qubit sources are used. A security proof of the MDIQKD protocol is presented that does not need the knowledge of the encoding states. Simulation results show that the scheme is practical.

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  • Received 24 September 2013

DOI:https://doi.org/10.1103/PhysRevA.88.062322

©2013 American Physical Society

Authors & Affiliations

Zhen-Qiang Yin1, Chi-Hang Fred Fung2,*, Xiongfeng Ma3,†, Chun-Mei Zhang1, Hong-Wei Li1, Wei Chen1,‡, Shuang Wang1,§, Guang-Can Guo1, and Zheng-Fu Han1,¶

  • 1Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
  • 2Department of Physics and Center of Theoretical and Computational Physics, University of Hong Kong, Pokfulam Road, Hong Kong
  • 3Center for Quantum Information, Institute for Interdisciplinary Information Sciences, Tsinghua University, Beijing, China

  • *chffung@hku.hk
  • xma@tsinghua.edu.cn
  • kooky@mail.ustc.edu.cn
  • §wshuang@ustc.edu.cn
  • zfhan@ustc.edu.cn

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Issue

Vol. 88, Iss. 6 — December 2013

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