Increasing identical particle entanglement by fuzzy measurements

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dc.creatorCavalcanti, D.
dc.creatorSantos, M. F.
dc.creatorCunha, M. O. Terra
dc.creatorLunkes, C.
dc.creatorVedral, V.
dc.date2005-05-05
dc.date2005-10-17
dc.date.accessioned2026-07-07T06:40:58Z
dc.date.available2026-07-07T06:40:58Z
dc.descriptionWe investigate the effects of fuzzy measurements on spin entanglement for identical particles, both fermions and bosons. We first consider an ideal measurement apparatus and define operators that detect the symmetry of the spatial and spin part of the density matrix as a function of particle distance. Then, moving on to realistic devices that can only detect the position of the particle to within a certain spread, it was surprisingly found that the entanglement between particles increases with the broadening of detection.
dc.description5 pages, 2 figures. V2: Appendix added. Minor corrections
dc.identifierhttps://arxiv.org/abs/quant-ph/0505029
dc.identifierhttp://arxiv.org/abs/quant-ph/0505029
dc.identifierPhys. Rev. A 72, 062307 (2005)
dc.identifierdoi:10.1103/PhysRevA.72.062307
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/101548
dc.subjectQuantum Physics
dc.titleIncreasing identical particle entanglement by fuzzy measurements
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