Quantum Communication Network Utilizing Quadripartite Entangled States of Optical Field

Details Quantum Communication Network Utilizing Quadripartite Entangled States of Optical Field Quantum Communication Network Utilizing Quadripartite Entangled States of Optical Field

2009-09-16

arxiv.org/abs/0909.2905v1

Phys. Rev. A 80, 042320 (2009)

Physics

Quantum Physics

Scientific paper

We propose two types of quantum dense coding communication networks with optical continuous variables, in which a quadripartite entangled state of the optical field with totally three-party correlations of quadrature amplitudes is utilized. In the networks, the exchange of information between any two participants can be manipulated by one or two of the remaining participants. The channel capacities for a variety of communication protocols are numerically calculated. Due to the fact that the quadripartite entangled states applied in the communication systems have been successfully prepared already in the laboratory, the proposed schemes are experimentally accessible at present.

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