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http://hdl.handle.net/2289/5974
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DC Field | Value | Language |
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dc.contributor.author | Tej, Prabhu J. | - |
dc.contributor.author | Usha Devi, A.R. | - |
dc.contributor.author | Karthik, H.S. | - |
dc.contributor.author | Sudha | - |
dc.contributor.author | Rajagopal, A.K. | - |
dc.date.accessioned | 2014-09-16T05:53:57Z | - |
dc.date.available | 2014-09-16T05:53:57Z | - |
dc.date.issued | 2014-06 | - |
dc.identifier.citation | Physical Review A, 2014, Vol. 89, p062116 | en |
dc.identifier.issn | 1094-1622 (Online) | - |
dc.identifier.issn | 1050-2947 | - |
dc.identifier.uri | http://hdl.handle.net/2289/5974 | - |
dc.description | Open Access | en |
dc.description.abstract | Quantum-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.iso | en | en |
dc.publisher | American Physical Society | en |
dc.relation.uri | http://arxiv.org/abs/1404.6065 | en |
dc.relation.uri | http://dx.doi.org/10.1103/PhysRevA.89.062116 | en |
dc.rights | 2014 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 Society | en |
dc.title | Quantum which-way information and fringe visibility when the detector is entangled with an ancilla | en |
dc.type | Article | en |
Appears in Collections: | Research Papers (LAMP) |
Files in This Item:
File | Description | Size | Format | |
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2014_PhysRevA_89_062116.pdf | Open Access | 1.03 MB | Adobe PDF | View/Open |
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