Partial scaling transform of multiqubit states as a criterion of separability

DOI10.1088/0305-4470/38/48/009zbMATH Open1255.81112arXivquant-ph/0509006OpenAlexW1986605179MaRDI QIDQ5714968

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Publication date: 16 December 2005

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Abstract: The partial scaling transform of the density matrix for multiqubit states is introduced to detect entanglement of quantum states. The transform contains partial transposition as a special case. The scaling transform corresponds to partial time scaling of subsystem (or partial Planck's constant scaling) which was used to formulate recently separability criterion for continous variables.A measure of entanglement which is a generalization of negativity measure is introduced being based on tomographic probability description of spin states.

Full work available at URL: https://arxiv.org/abs/quant-ph/0509006

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