A description of entanglement in terms of quantum phase

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dc.creatorSanchez-Soto, Luis L.
dc.creatorDelgado, Julian
dc.creatorKlimov, Andrei B.
dc.creatorBjork, Gunnar
dc.date2002-02-19
dc.date2002-08-06
dc.date.accessioned2026-07-07T06:03:42Z
dc.date.available2026-07-07T06:03:42Z
dc.descriptionWe explore the role played by the phase in an accurate description of the entanglement of bipartite systems. We first present an appropriate polar decomposition that leads to a truly Hermitian operator for the phase of a single qubit. We also examine the positive operator-valued measures that can describe the qubit phase properties. When dealing with two qubits, the relative phase seems to be a natural variable to understand entanglement. In this spirit, we propose a measure of entanglement based on this variable.
dc.description11 pages, previous title has changed, new section added, corrected typos, no figures
dc.identifierhttps://arxiv.org/abs/quant-ph/0202100
dc.identifierhttp://arxiv.org/abs/quant-ph/0202100
dc.identifierPhys. Rev. A 66, 042112 (2002)
dc.identifierdoi:10.1103/PhysRevA.66.042112
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/90040
dc.subjectQuantum Physics
dc.titleA description of entanglement in terms of quantum phase
dc.typetext

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