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Chinese Physics Letters

Permutation Matrix Method for Dense Coding Using GHZ States

Jin Rui-Bo, Libing Chen, Faqiang Wang, Zhi-Kun Su

Published May 29, 2008• 2 citations
Publisher

Abstract

We present a new method called the permutation matrix method to perform dense coding using Greenberger–Horne–Zeilinger (GHZ) states. We show that this method makes the study of dense coding systematically and regularly. It also has high potential to be realized physically.
DOI
10.1088/0256-307x/25/6/010

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Multipartite quantum-information transmission has been a key task for practice purposes and applications in the past decades. In this paper, we present a novel protocol for the multiqubit super dense coding, by using the Greenberger-Horne-Zeilinger (GHZ) states. Our protocol involves measurements doable in the current technique of labs, and thus is possibly realizable and may be extendable to more complicated cases for many systems. In quantum physics, the way the object is measured will affect the code, and the information wont work like puzzles as the condition in general physics which means that, when the divided message is put together, the complete information will be obtained. It requires more complex work to get useful information, like the cooperation of code accepters. To compare with the way in general physics, it is more safe in quantum physics.