Controlled Quantum Dense Coding in a Four-particle Non-maximally Entangled State via Local Measurements

Details Controlled Quantum Dense Coding in a Four-particle Non-maximally Entangled State via Local Measurements Controlled Quantum Dense Coding in a Four-particle Non-maximally Entangled State via Local Measurements

2006-01-21

arxiv.org/abs/quant-ph/0601144v1

Journal of the Korean Physical Society, 46, 5(2005)1080

Physics

Quantum Physics

Scientific paper

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 ($N+2$)-particle quantum channel is proposed.

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