期刊
CHINESE PHYSICS LETTERS
卷 28, 期 4, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0256-307X/28/4/040305
关键词
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资金
- National Natural Science Foundation of China [10974020]
- Beijing Natural Science Foundation [1082008]
- Fundamental Research Funds for the Central Universities
We present a quantum hyperdense coding protocol with hyperentanglement in polarization and spatial-mode degrees of freedom of photons first and then give the details for a quantum secure direct communication (QSDC) protocol based on this quantum hyperdense coding protocol. This QSDC protocol has the advantage of having a higher capacity than the quantum communication protocols with a qubit system. Compared with the QSDC protocol based on superdense coding with. d-dimensional systems, this QSDC protocol is more feasible as the preparation of a high-dimension quantum system is more difficult than that of a two-level quantum system at present.
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