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dc.contributor.author
Trallero Giner, C.
dc.contributor.author
Durnev, M. V.
dc.contributor.author
Núñez Fernández, Yuriel
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dc.contributor.author
Vasilevskiy, M. I.
dc.contributor.author
López Richard, V.
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Kavokin, A.
dc.date.available
2018-01-10T19:18:32Z
dc.date.issued
2014-05
dc.identifier.citation
Trallero Giner, C.; Durnev, M. V.; Núñez Fernández, Yuriel; Vasilevskiy, M. I.; López Richard, V.; et al.; Excited states of exciton-polariton condensates in 2D and 1D harmonic traps; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 89; 20; 5-2014; 1-11; 205317
dc.identifier.issn
1098-0121
dc.identifier.uri
http://hdl.handle.net/11336/32879
dc.description.abstract
We present a theoretical description of Bogolyubov-type excitations of exciton-polariton Bose-Einstein condensates (BECs) in semiconductor microcavities. For a typical two-dimensional (2D) BEC we focus on two limiting cases, the weak- and strong-coupling regimes, where a perturbation theory and the Thomas-Fermi approximation, respectively, are valid. We calculate integrated scattering intensity spectra for probing the collective excitations of the condensate in both considered limits. Moreover, in relation to recent experiments on optical modulation allowing localization of condensates in a trap with well-controlled shape and dimensions, we study the quasi-one-dimensional (1D) motion of the BEC in microwires and report the corresponding Bogolyubov excitation spectrum. We show that in the 1D case the characteristic polariton-polariton interaction constant is expressed as g 1 = 3 λ N / ( 2 L y ) ( λ is the 2D polariton-polariton interaction parameter in the cavity, N the number of the particles, and L y the wire cavity width). We reveal some interesting features for 2D and 1D Bogolyubov spectra for both repulsive ( λ > 0 ) and attractive ( λ < 0 ) interactions.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Physical Society
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Exciton-Polariton Condensates
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Harmonic Traps
dc.subject.classification
Astronomía
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Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Excited states of exciton-polariton condensates in 2D and 1D harmonic traps
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-12-14T20:14:56Z
dc.journal.volume
89
dc.journal.number
20
dc.journal.pagination
1-11; 205317
dc.journal.pais
Estados Unidos
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dc.description.fil
Fil: Trallero Giner, C.. Universidad de la Habana; Cuba
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Fil: Durnev, M. V.. State University of St. Petersburg; Rusia
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Fil: Núñez Fernández, Yuriel. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
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Fil: Vasilevskiy, M. I.. Universidade Do Minho; Portugal
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Fil: López Richard, V.. Universidade Federal do São Carlos; Brasil
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Fil: Kavokin, A.. State University of St. Petersburg; Rusia. University of Southampton; Reino Unido
dc.journal.title
Physical Review B: Condensed Matter and Materials Physics
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1103/PhysRevB.89.205317
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prb/abstract/10.1103/PhysRevB.89.205317
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