Measurement-device-independent quantum secure direct communication

Quantum secure direct communication (QSDC) is a unique technique, which supports the secure transmission of confidential information directly through a quantum channel without the need for a secret key and for ciphertext. Hence this secure communication protocol fundamentally differs from its conven...

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Bibliographic Details
Published in:Science China. Physics, mechanics & astronomy mechanics & astronomy, 2020-03, Vol.63 (3), p.230362, Article 230362
Main Authors: Zhou, ZengRong, Sheng, YuBo, Niu, PengHao, Yin, LiuGuo, Long, GuiLu, Hanzo, Lajos
Format: Article
Language:English
Subjects:
Algorithms
Astronomy
Classical and Continuum Physics
Communication
Distribution channels
Encryption
Loopholes
Observations and Techniques
Photons
Physics
Physics and Astronomy
Protocol
Quantum cryptography
Quantum physics
Qubits (quantum computing)
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Summary:Quantum secure direct communication (QSDC) is a unique technique, which supports the secure transmission of confidential information directly through a quantum channel without the need for a secret key and for ciphertext. Hence this secure communication protocol fundamentally differs from its conventional counterparts. In this article, we report the first measurement-device-independent (MDI) QSDC protocol relying on sequences of entangled photon pairs and single photons. Explicitly, it eliminates the security loopholes associated with the measurement device. Additionally, this MDI technique is capable of doubling the communication distance of its conventional counterpart operating without using our MDI technique. We also conceive a protocol associated with linear optical Bell-basis measurements, where only two of the four Bell-basis states could be measured. When the number of qubits in a sequence reduces to 1, the MDI-QSDC protocol degenerates to a deterministic MDI quantum key distribution protocol.
ISSN:1674-7348
1869-1927
DOI:10.1007/s11433-019-1450-8