Quantum secure direct communication based on single-photon Bell-state measurement

被引：121
作者：
Li, Tao [1 ,2 ,3 ]
Long, Gui-Lu [2 ,3 ,4 ,5 ]
机构：
[1] Nanjing Univ Sci & Technol, Sch Sci, Nanjing 210094, Peoples R China
[2] Tsinghua Univ, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China
[3] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China
[4] Tsinghua Natl Lab Informat Sci & Technol, Beijing 100084, Peoples R China
[5] Collaborat Innovat Ctr Quantum Matter, Beijing 100084, Peoples R China
来源：
NEW JOURNAL OF PHYSICS | 2020年 / 22卷 / 06期
基金：
中国国家自然科学基金;
关键词：
quantum communication; single-photon Bell-state measurement; detector-side-channel attack; hyper-encoded photon; quantum secure direct communication; GHZ STATES; IMPLEMENTATION; TELEPORTATION; ENTANGLEMENT; CHANNEL;
D O I：
10.1088/1367-2630/ab8ab5
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Security loopholes exploiting the flaws of practical apparatus, especially non-ideal photon detectors, are pressing issues in practical quantum communication. We propose a simple quantum secure direct communication protocol based on single-photon Bell-state measurement and remove side-channel attacks on photon detectors. This quantum communication protocol in principle works in a deterministic way, and it does not require the two-photon interference of photons from independent sources. The single-photon Bell-state measurement with a unity efficiency can be constructed with only linear optics, which significantly simplifies its experimental implementation. Furthermore, we prove that our quantum secure direct communication protocol is immune to general detector-side-channel attacks.
引用
收藏
页数：10
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