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Journal of Hebei Normal University

Controlled Quantum Dense Coding

Yan Feng-Li

Published Jan 1, 2007• 0 citations
OpenAlex

Abstract

A controlled quantum dense coding scheme is proposed with a three-particle non-maximally entangled Greenberger-Horne-Zeilinger(GHZ) state.The third party controlls the quantum channel via the local measurement.By introducing an auxiliary particle and performing an unitary transformation,quantum dense coding will be succeeded with certain probability.

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A controlled quantum dense coding scheme is proposed with a three-particle non-maximally entangled Greenberger-Horne-Zeilinger(GHZ) state.The third party controlls the quantum channel via the local measurement.By introducing an auxiliary particle and performing an unitary transformation,quantum dense coding will be succeeded with certain probability.
A controlled quantum dense coding scheme is investigated with a four-particle non-maximal quantum channel. The amount of classical information is shown to be capable of being controlled by the controllers through adjustments of the local measurement angles and to depend on the coefficients of the quantum channel; in addition, the four particles are distributed in two inverse ways in such an quantum channel. A restricted condition for distributing the particles to realize quantum dense coding in an arbitrary (N+2N+2N+2)-particle quantum channel is proposed.