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理论物理通讯：英文版

Separability of Mixed States of the Quantum Network of Three Nodes

GUZhi-Yu, Zhiyu, Qian Qian, Shang-Wu

Published Jan 1, 2003• 0 citations
OpenAlex

Abstract

This article discusses the complete separability and partial separability of the pure states of the quantum network of three nodes by means of the criterion of entanglement in terms of the covariance correlation tensor in quantum network theory.

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理论物理通讯：英文版•Jan 1, 2003•0 citations
By using the block division method in matrix calculus, this article successfully calculate the expectation values of the generating operators and the correlation tensors for quantum network of any nodes. Thence, by means of the criterion of entanglement in terms of the covariance correlation tensor in quantum network theory, this article discusses the complete and partial separability conditions of the mixed quantum state for a quantum network of any nodes and judge the separability of a quantum state in the general case of any nodes for two examples.