Large payload quantum steganography based on cavity quantum electrodynamics

doi:10.1088/1674-1056/22/4/040305

Abstract A large payload quantum steganography protocol based on cavity quantum electrodynamics (QED) is presented in the paper, which effectively uses the evolution law of atom in cavity QED. The protocol builds up hidden channel to transmit secret messages using entanglement swapping between one GHZ state and one Bell state in cavity QED together with the Hadamard operation. The quantum steganography protocol is insensitive to cavity decay and thermal field. The capacity, imperceptibility and security against eavesdropping are analyzed in detail in the protocol. It turns out that the protocol not only has good imperceptibility but also possesses good security against eavesdropping. In addition, its capacity of hidden channel achieves five bits, larger than most of those previous quantum steganography protocols.

Keywords: quantum steganography hidden capacity entanglement swapping Hadamard operation cavity QED

Received: 07 August 2012
Revised: 20 October 2012
Accepted manuscript online:

PACS:	03.67.Dd	(Quantum cryptography and communication security)
	03.65.Ud	(Entanglement and quantum nonlocality)

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. LQ12F02012 and Y6100421).

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) Large payload quantum steganography based on cavity quantum electrodynamics 2013 Chin. Phys. B 22 040305

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