One-photon-interference quantum secure direct communication

• URL: http://arxiv.org/abs/2404.02780v1
• Date: Wed, 3 Apr 2024 14:51:58 GMT
• Title: One-photon-interference quantum secure direct communication
• Authors: Xiangjie Li, Min Wang, Xingbo Pan, Yunrong Zhang, Guilu Long,
• Abstract summary: Measurement-device-independent (MDI) QSDC protocols can eliminate the security loopholes associated with measurement devices. We propose a one-photon-interference MDI QSDC protocol which transcends the need for quantum memory, ideal single-photon sources, or entangled light sources.
• Score: 2.9464311367375755
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: Quantum secure direct communication (QSDC) is a quantum communication paradigm that transmits confidential messages directly using quantum states. Measurement-device-independent (MDI) QSDC protocols can eliminate the security loopholes associated with measurement devices. To enhance the practicality and performance of MDI-QSDC protocols, we propose a one-photon-interference MDI QSDC (OPI-QSDC) protocol which transcends the need for quantum memory, ideal single-photon sources, or entangled light sources. The security of our OPI-QSDC protocol has also been analyzed using quantum wiretap channel theory. Furthermore, our protocol could double the distance of usual prepare-and-measure protocols, since quantum states sending from adjacent nodes are connected with single-photon interference, which demonstrates its potential to extend the communication distance for point-to-point QSDC.

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