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Easy implementable algorithm for the geometric measure of entanglement

By Alexander Streltsov, Hermann Kampermann and Dagmar Bruß

Abstract

We present an easy implementable algorithm for approximating the geometric measure of entanglement from above. The algorithm can be applied to any multipartite mixed state. It involves only the solution of an eigenproblem and finding a singular value decomposition, no further numerical techniques are needed. To provide examples, the algorithm was applied to the isotropic states of 3 qubits and the 3-qubit XX model with external magnetic field.Comment: 9 pages, 3 figure

Topics: Quantum Physics
Year: 2011
DOI identifier: 10.1103/PhysRevA.84.022323
OAI identifier: oai:arXiv.org:1104.0821
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