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Chinese Physics Letters

Permutation Matrix Method for Dense Coding Using GHZ States

金锐博, 陈立冰, 王发强, 苏志锟

Published Jan 1, 2008• 0 citations
OpenAlex

Abstract

我们在场调用排列矩阵方法执行用 Greenberger-Horne-Zeilinger (GHZ ) 的稠密的编码的一个新方法说。我们证明这个方法做系统地并且定期的稠密的编码的学习。它也有高潜力身体上被认识到。

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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.