Real-Time Phase Tracking Scheme With Mismatched-Basis Data for Phase-Coding Quantum Key Distribution
نویسندگان
چکیده
منابع مشابه
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Security of practical phase-coding quantum key distribution
Security proof of practical quantum key distribution (QKD) has attracted a lot of attentions in recent years. Most of real-life QKD implementations are based on phase-coding BB84 protocol, which usually uses Unbalanced Mach-Zehnder Interferometer (UMZI) as the information coder and decoder. However, the long arm and short arm of UMZI will introduce different loss in practical experimental reali...
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The calibration of the polarization basis between the transmitter and receiver is an important task in quantum key distribution. A continuously working polarization-basis tracking scheme (PBTS) will effectively promote the efficiency of the system and reduce the potential security risk when switching between the transmission and calibration modes. Here, we proposed a single-photon level continu...
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A novel quantum cryptography scheme is proposed, in which a single photon is prepared in a linear superposition state of three basis kets. A photon split to three pulses is sent from Alice to Bob, where the phase difference between sequential two pulses carries bit information. Bob measures the phase difference by passive differential phase detection. This scheme is suitable for fiber transmiss...
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Introduction When designing quantum key distribution (QKD) protocols, measurement outcomes produced by an incompatible choice of basis are usually discarded by the protocol specification. However, it has been shown that these mismatched measurement outcomes can actually be useful in better determining E’s attack, leading potentially to an improved key-rate bound. For instance, in [1], it was sh...
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ژورنال
عنوان ژورنال: IEEE Photonics Journal
سال: 2020
ISSN: 1943-0655,1943-0647
DOI: 10.1109/jphot.2020.2986343