Localization of a bose-einstein-condensate vortex in a bichromatic optical lattice
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1103/PhysRevA.81.043636 http://hdl.handle.net/11449/225840 |
Resumo: | By numerical simulation of the time-dependent Gross-Pitaevskii equation we show that a weakly interacting or noninteracting Bose-Einstein condensate (BEC) vortex can be localized in a three-dimensional bichromatic quasiperiodic optical-lattice (OL) potential generated by the superposition of two standing-wave polarized laser beams with incommensurate wavelengths. We also study the localization of a (nonrotating) BEC in two and three dimensions by bichromatic OL potentials along orthogonal directions. This is a generalization of the localization of a BEC in a one-dimensional bichromatic OL as studied in a recent experiment. We demonstrate the stability of the localized state by considering its time evolution in the form of a stable breathing oscillation in a slightly altered potential for a large period of time. Finally, we consider the localization of a BEC in a random one-dimensional potential in the form of several identical repulsive spikes arbitrarily distributed in space. © 2010 The American Physical Society. |
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Repositório Institucional da UNESP |
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Localization of a bose-einstein-condensate vortex in a bichromatic optical latticeBy numerical simulation of the time-dependent Gross-Pitaevskii equation we show that a weakly interacting or noninteracting Bose-Einstein condensate (BEC) vortex can be localized in a three-dimensional bichromatic quasiperiodic optical-lattice (OL) potential generated by the superposition of two standing-wave polarized laser beams with incommensurate wavelengths. We also study the localization of a (nonrotating) BEC in two and three dimensions by bichromatic OL potentials along orthogonal directions. This is a generalization of the localization of a BEC in a one-dimensional bichromatic OL as studied in a recent experiment. We demonstrate the stability of the localized state by considering its time evolution in the form of a stable breathing oscillation in a slightly altered potential for a large period of time. Finally, we consider the localization of a BEC in a random one-dimensional potential in the form of several identical repulsive spikes arbitrarily distributed in space. © 2010 The American Physical Society.Instituto de Física Teórica UNESP Universidade Estadual Paulista, Barra Funda, 01.140-070 São Paulo, São PauloInstituto de Física Teórica UNESP Universidade Estadual Paulista, Barra Funda, 01.140-070 São Paulo, São PauloUniversidade Estadual Paulista (UNESP)Adhikari, S. K. [UNESP]2022-04-28T21:01:17Z2022-04-28T21:01:17Z2010-04-29info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1103/PhysRevA.81.043636Physical Review A - Atomic, Molecular, and Optical Physics, v. 81, n. 4, 2010.1050-29471094-1622http://hdl.handle.net/11449/22584010.1103/PhysRevA.81.0436362-s2.0-77951699704Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhysical Review A - Atomic, Molecular, and Optical Physicsinfo:eu-repo/semantics/openAccess2022-04-28T21:01:17Zoai:repositorio.unesp.br:11449/225840Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:48:27.199967Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Localization of a bose-einstein-condensate vortex in a bichromatic optical lattice |
title |
Localization of a bose-einstein-condensate vortex in a bichromatic optical lattice |
spellingShingle |
Localization of a bose-einstein-condensate vortex in a bichromatic optical lattice Adhikari, S. K. [UNESP] |
title_short |
Localization of a bose-einstein-condensate vortex in a bichromatic optical lattice |
title_full |
Localization of a bose-einstein-condensate vortex in a bichromatic optical lattice |
title_fullStr |
Localization of a bose-einstein-condensate vortex in a bichromatic optical lattice |
title_full_unstemmed |
Localization of a bose-einstein-condensate vortex in a bichromatic optical lattice |
title_sort |
Localization of a bose-einstein-condensate vortex in a bichromatic optical lattice |
author |
Adhikari, S. K. [UNESP] |
author_facet |
Adhikari, S. K. [UNESP] |
author_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Adhikari, S. K. [UNESP] |
description |
By numerical simulation of the time-dependent Gross-Pitaevskii equation we show that a weakly interacting or noninteracting Bose-Einstein condensate (BEC) vortex can be localized in a three-dimensional bichromatic quasiperiodic optical-lattice (OL) potential generated by the superposition of two standing-wave polarized laser beams with incommensurate wavelengths. We also study the localization of a (nonrotating) BEC in two and three dimensions by bichromatic OL potentials along orthogonal directions. This is a generalization of the localization of a BEC in a one-dimensional bichromatic OL as studied in a recent experiment. We demonstrate the stability of the localized state by considering its time evolution in the form of a stable breathing oscillation in a slightly altered potential for a large period of time. Finally, we consider the localization of a BEC in a random one-dimensional potential in the form of several identical repulsive spikes arbitrarily distributed in space. © 2010 The American Physical Society. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-04-29 2022-04-28T21:01:17Z 2022-04-28T21:01:17Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1103/PhysRevA.81.043636 Physical Review A - Atomic, Molecular, and Optical Physics, v. 81, n. 4, 2010. 1050-2947 1094-1622 http://hdl.handle.net/11449/225840 10.1103/PhysRevA.81.043636 2-s2.0-77951699704 |
url |
http://dx.doi.org/10.1103/PhysRevA.81.043636 http://hdl.handle.net/11449/225840 |
identifier_str_mv |
Physical Review A - Atomic, Molecular, and Optical Physics, v. 81, n. 4, 2010. 1050-2947 1094-1622 10.1103/PhysRevA.81.043636 2-s2.0-77951699704 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Physical Review A - Atomic, Molecular, and Optical Physics |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128704220495872 |