Duality relation and joint measurement in a Mach-Zehnder Interferometer

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dc.creatorLiu, Nai-Le
dc.creatorLi, Li
dc.creatorYu, Sixia
dc.creatorChen, Zeng-Bing
dc.date2007-12-21
dc.date2009-05-12
dc.date.accessioned2026-07-07T13:13:15Z
dc.date.available2026-07-07T13:13:15Z
dc.descriptionThe Mach-Zehnder interferometric setup quantitatively characterizing the wave-particle duality implements in fact a joint measurement of two unsharp observables. We present a necessary and sufficient condition for such a pair of unsharp observables to be jointly measurable. The condition is shown to be equivalent to a duality inequality, which for the optimal strategy of extracting the which-path information is more stringent than the Jaeger-Shimony-Vaidman-Englert inequality.
dc.description6 pages, 2 figures, title changed, presentation improved, appendix added, references updated, final version as published in PRA
dc.identifierhttps://arxiv.org/abs/0712.3653
dc.identifierhttp://arxiv.org/abs/0712.3653
dc.identifierPhys. Rev. A 79, 052108 (2009)
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/229829
dc.subjectQuantum Physics
dc.titleDuality relation and joint measurement in a Mach-Zehnder Interferometer
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