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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/5974
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dc.contributor.authorTej, Prabhu J.-
dc.contributor.authorUsha Devi, A.R.-
dc.contributor.authorKarthik, H.S.-
dc.contributor.authorSudha-
dc.contributor.authorRajagopal, A.K.-
dc.date.accessioned2014-09-16T05:53:57Z-
dc.date.available2014-09-16T05:53:57Z-
dc.date.issued2014-06-
dc.identifier.citationPhysical Review A, 2014, Vol. 89, p062116en
dc.identifier.issn1094-1622 (Online)-
dc.identifier.issn1050-2947-
dc.identifier.urihttp://hdl.handle.net/2289/5974-
dc.descriptionOpen Accessen
dc.description.abstractQuantum-mechanical wave-particle duality is quantified in terms of a trade-off relation between the fringe visibility and the which-way distinguishability in an interference experiment. This relation was recently generalized by Banaszek et al. [Nat. Commun. 4, 2594 (2013)] when the particle is equipped with an internal degree of freedom such as spin. Here, we extend the visibility-distinguishability trade-off relation to quantum interference of a particle possessing an internal degree of freedom, when the which-way detector state is entangled with an ancillary system. We introduce an extended which-way distinguishability DE and the associated extended fringe visibility VE, satisfying the inequality D2E+V2E≤1 in this scenario. We illustrate, with the help of three specific examples, that while the which-way information inferred solely from the detector state (without ancilla) vanishes, the extended distinguishability retrievable via measurements on the detector-ancilla entangled state is nonzero. Furthermore, in all the three examples, the extended visibility and the generalized visibility (which was introduced by Banaszek et al.) match identically with each other.en
dc.language.isoenen
dc.publisherAmerican Physical Societyen
dc.relation.urihttp://arxiv.org/abs/1404.6065en
dc.relation.urihttp://dx.doi.org/10.1103/PhysRevA.89.062116en
dc.rights2014 American Physical Society This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Physical Societyen
dc.titleQuantum which-way information and fringe visibility when the detector is entangled with an ancillaen
dc.typeArticleen
Appears in Collections:Research Papers (LAMP)

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