| Issue |
EPL
Volume 148, Number 3, November 2024
|
|
|---|---|---|
| Article Number | 38001 | |
| Number of page(s) | 5 | |
| Section | Quantum information | |
| DOI | https://doi.org/10.1209/0295-5075/ad877b | |
| Published online | 04 November 2024 | |
Mixed-encoding one-photon-interference quantum secure direct communication
1 State Key Laboratory of Low-dimensional Quantum Physics and Department of Physics, Tsinghua University Beijing 100084, China
2 China Mobile (Suzhou) Software Technology Company Limited - Suzhou 215000, China
3 Beijing Academy of Quantum Information Sciences - Beijing 100193, China
4 Frontier Science Center for Quantum Information - Beijing 100084, China
5 Beijing National Research Center for Information Science and Technology - Beijing 100084, China
Received: 16 August 2024
Accepted: 16 October 2024
Quantum secure direct communication (QSDC) guarantees both the security and reliability of information transmission using quantum states. One-photon-interference QSDC (OPI-QSDC) is a technique that enhances the transmission distance and ensures secure point-to-point information transmission, but it requires complex phase locking technology. This paper proposes a mixed-encoding one-photon-interference QSDC (MO-QSDC) protocol that removes the need for phase locking technology. Numerical simulations demonstrate that the MO-QSDC protocol could also beat the PLOB bound.
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