Role of indistinguishability in interferometric phase estimation

We report a theoretical and experimental study on the role of indistinguishability in the estimation of an interferometric phase. In particular, we show that the quantum Fisher information, which limits the maximum precision achievable in the parameter estimation, increases linearly with respect to...

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Detalles Bibliográficos
Autores principales:	Knoll, Laura T., Bosyk, Gustavo Martín, López Grande, I. H., Larotonda, Miguel A
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2019
Materias:	Ciencias Exactas Física interferometric phase quantum Fisher information indistinguishability
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/125523
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-125523
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Exactas Física interferometric phase quantum Fisher information indistinguishability
spellingShingle	Ciencias Exactas Física interferometric phase quantum Fisher information indistinguishability Knoll, Laura T. Bosyk, Gustavo Martín López Grande, I. H. Larotonda, Miguel A Role of indistinguishability in interferometric phase estimation
topic_facet	Ciencias Exactas Física interferometric phase quantum Fisher information indistinguishability
description	We report a theoretical and experimental study on the role of indistinguishability in the estimation of an interferometric phase. In particular, we show that the quantum Fisher information, which limits the maximum precision achievable in the parameter estimation, increases linearly with respect to the degree of indistinguishability between the input photons in a two-port interferometer, in the ideal case of a pure probe state. We experimentally address the role played by the indistinguishability for the case of two photons entering a polarization-based interferometer, where the degree of indistinguishability is characterized by the overlap between two spatial modes. The experimental results support the fact that, even in the presence of white noise, a quantum enhancement in the interferometric phase estimation can be obtained from a minimum degree of indistinguishability.
format	Articulo Articulo
author	Knoll, Laura T. Bosyk, Gustavo Martín López Grande, I. H. Larotonda, Miguel A
author_facet	Knoll, Laura T. Bosyk, Gustavo Martín López Grande, I. H. Larotonda, Miguel A
author_sort	Knoll, Laura T.
title	Role of indistinguishability in interferometric phase estimation
title_short	Role of indistinguishability in interferometric phase estimation
title_full	Role of indistinguishability in interferometric phase estimation
title_fullStr	Role of indistinguishability in interferometric phase estimation
title_full_unstemmed	Role of indistinguishability in interferometric phase estimation
title_sort	role of indistinguishability in interferometric phase estimation
publishDate	2019
url	http://sedici.unlp.edu.ar/handle/10915/125523
work_keys_str_mv	AT knolllaurat roleofindistinguishabilityininterferometricphaseestimation AT bosykgustavomartin roleofindistinguishabilityininterferometricphaseestimation AT lopezgrandeih roleofindistinguishabilityininterferometricphaseestimation AT larotondamiguela roleofindistinguishabilityininterferometricphaseestimation
bdutipo_str	Repositorios
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Role of indistinguishability in interferometric phase estimation

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