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Chinese Physics Letters

Entangled States Used in Remote Information Concentration and Their Properties

Chen Yin-Hua, Yu Ya-Fei, Zhi‐Ming Zhang

Published Nov 29, 2006• 6 citations
Publisher

Abstract

We analyse a process of remote information concentration achieved by the W state. The result turns out to be neither as good as performed by the GHZ state nor as by the Smolin bound entangled state. Based on this particular phenomenon, the properties of the three entangled states are realized.
DOI
10.1088/0256-307x/23/12/010

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Four qubit bound entangled Smolin states are generalised in a natural way to even number of qubits. They are shown to maximally violate simple correlation Bell inequalities and, as such, to reduce communication complexity, though they do not admit quantum security. They are also shown to serve for remote quantum information concentration like in the case of the original four qubit states. Application of the information concentration to the process of unlocking of classical correlations and quantum entanglement by quantum bit is pointed out.