Quantum steganography with large payload based on dense coding and entanglement swapping of Greenberger-Horne-Zeilinger states

doi:10.1088/1674-1056/22/5/050309

Abstract A quantum steganography protocol with a large payload is proposed based on the dense coding and the entanglement swapping of the Greenberger-Horne-Zeilinger (GHZ) states. Its super quantum channel is formed by building up a hidden channel within the original quantum secure direct communication (QSDC) scheme. Based on the original QSDC, secret messages are transmitted by integrating the dense coding and the entanglement swapping of the GHZ states. The capacity of the super quantum channel achieves six bits per round covert communication, much higher than the previous quantum steganography protocols. Its imperceptibility is good, since the information and the secret messages can be regarded to be random or pseudo-random. Moreover, its security is proved to be reliable.

Keywords: quantum steganography quantum secure direct communication dense coding entanglement swapping

Received: 22 November 2012
Revised: 27 December 2012
Accepted manuscript online:

PACS:	03.67.Dd	(Quantum cryptography and communication security)
	03.67.Hk	(Quantum communication)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 60972071) and the Natural Science Foundation of Zhejiang Province, China (Grant Nos. Y6100421 and LQ12F02012).

Corresponding Authors: Ye Tian-Yu
E-mail: flystu008@yahoo.com.cn

Cite this article:

Ye Tian-Yu (叶天语), Jiang Li-Zhen (蒋丽珍) Quantum steganography with large payload based on dense coding and entanglement swapping of Greenberger-Horne-Zeilinger states 2013 Chin. Phys. B 22 050309

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Quantum steganography with large payload based on dense coding and entanglement swapping of Greenberger-Horne-Zeilinger states

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