Quantum Secure Direct Communication with Quantum Memory.
By Dong Ding, Yu‐Bo Sheng, Lan Zhou, Baosen Shi, G. Guo. Physical Review Letters, 2016
567 citations recorded by the source corpus.
Quantum communication provides an absolute security advantage, and it has been widely developed over the past 30 years. As an important branch of quantum communication, quantum secure direct communication (QSDC) promotes high security and instantaneousness in communication through directly transmitting messages over a quantum channel. The full implementation of a quantum protocol always requires the ability to control the transfer of a message effectively in the time domain; thus, it is essential to combine QSDC with quantum memory to accomplish the communication task. In this Letter, we report the experimental demonstration of QSDC with state-of-the-art atomic quantum memory for the first time in principle. We use the polarization degrees of freedom of photons as the information carrier, and the fidelity of entanglement decoding is verified as approximately 90%. Our work completes a fundamental step toward practical QSDC and demonstrates a potential application for long-distance quantum communication in a quantum network.
Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics
View Paper: https://www.semanticscholar.org/paper/ed2c20d06c9cfd724b00cb0abe8896c7bbb8a9d4
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Citations in the corpus
- Quantum technology for military applications (2021, background): “Apart from QKD, which distributes the key only, the quantum network could be used for quantumsecure direct communication (QSDC) [188, 189, 190, 191] between space, special forces, air, navy and land assets.”
- A Survey on Green 6G Network: Architecture and Technologies (2019, background): “After decades of exploration, there are many branches of QC: quantum key distribution, quantum teleportation, quantum secret sharing and quantum secure direct communication [66].”
- A Survey on Quantum Channel Capacities (2018, background): “This characteristics allow quantum based solutions to support absolute security, to which there have been abundant examples of quantum based solutions [176], [300], [302], [569], [553] where a popular example of mature applications is quantum key distribution (QKD) [53], [68].”
- One-step quantum secure direct communication. (2021, background): “In 2017, Zhang et al. [27] demonstrated the entanglement-based QSDC experiment with quantum memory.”