Genuine tripartite entanglement semi-monotone for (2 x 2 x n)-dimensional systems

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dc.creatorYu, Chang-shui
dc.creatorSong, He-shan
dc.creatorWang, Ya-hong
dc.date2006-07-05
dc.date2007-01-19
dc.date.accessioned2026-07-07T12:09:28Z
dc.date.available2026-07-07T12:09:28Z
dc.descriptionIn this paper, we present a new approach to study genuine tripartite entanglement existing in $(2\times 2\times n)-$dimensional quantum pure states. By utilizing the approach, we introduce a particular quantity to measure genuine tripartite entanglement. The quantity is shown to be an entanglement monotone in 2-dimensional subsystems (semi-monotone) and reaches zero for separable states and $(2\times 2\times 2)-$dimensional $W$ states, hence is a good criterion to characterize genuine tripartite entanglement. Furthermore, the formulation for pure states can be conveniently extended to the case of mixed states by utilizing the kronecker product approximation technique. As applications, we give the analytic approximation for weakly mixed states, and study the genuine tripartite entanglement of two given weakly mixed states.
dc.description11 pages, 1 figure. Replaced by revised version. To be published in Quantum Information and Computation
dc.identifierhttps://arxiv.org/abs/quant-ph/0607032
dc.identifierhttp://arxiv.org/abs/quant-ph/0607032
dc.identifierQuantum Information and Computation 7(7),584 (2007)
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/209635
dc.subjectQuantum Physics
dc.titleGenuine tripartite entanglement semi-monotone for (2 x 2 x n)-dimensional systems
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