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DEGREE OF ENTANGLEMENT FOR QUANTUM STATES
https://doi.org/10.1142/S0219749904000420Cited by:4 (Source: Crossref)
Abstract
A measure to quantify the degree of entanglement for two qubits (2×2) in a pure state is presented in Phys. Rev.A65, 044303 (2002). We generalize their results to 2×n quantum systems. An analytical expression of the entanglement of formation for quantum mixed states of 2×n quantum systems is obtained. Moreover for multipartite quantum systems a generalized "measure" is presented to judge if a pure state is separable or maximally entangled.
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PACS: 03.67.-a, 89.70.+c
