High-capacity quantum secure direct communication based on quantum hyperdense coding with hyperentanglement

Details High-capacity quantum secure direct communication based on quantum hyperdense coding with hyperentanglement High-capacity quantum secure direct communication based on quantum hyperdense coding with hyperentanglement

2011-03-02

arxiv.org/abs/1103.0471v2

Chinese Physics Letters 28, 040305 (2011)

Physics

Quantum Physics

5 pages, 2 figure

Scientific paper

10.1088/0256-307X/28/4/040305

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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