Excited states of exciton-polariton condensates in 2D and 1D harmonic traps
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/1822/32122 |
Resumo: | 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 inmicrowires 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 lambda N/(2L(y)) (lambda 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 (lambda > 0) and attractive (lambda < 0) interactions. |
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Excited states of exciton-polariton condensates in 2D and 1D harmonic trapsCollective excitationsQuantum-wellsBoseLightSpectroscopyVorticesFluidCiências Naturais::Ciências FísicasScience & TechnologyWe 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 inmicrowires 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 lambda N/(2L(y)) (lambda 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 (lambda > 0) and attractive (lambda < 0) interactions.Fundação para a Ciência e a Tecnologia (FCT) - Portuguese Foundation for Science and Technology Grants: PTDC-FIS-113199-2009, PEst-C/FIS/UI0607/2013CNPq, FAPESP, BrazilRussian Ministry of Education and Science 11.G34.31.0067American Physical SocietyUniversidade do MinhoTrallero-Giner, CarlosDurnev, M. V.Núñez Fernández, YurielVasilevskiy, MikhailLópez-Richard, V.Kavokin, Alexey2014-05-272014-05-27T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/32122engPhysical Review B: Condensed Matter and Materials Physics 89 (2014) 2053171098-012110.1103/PhysRevB.89.205317http://journals.aps.org/prb/abstract/10.1103/PhysRevB.89.205317info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:04:09Zoai:repositorium.sdum.uminho.pt:1822/32122Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:54:21.477904Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Excited states of exciton-polariton condensates in 2D and 1D harmonic traps |
title |
Excited states of exciton-polariton condensates in 2D and 1D harmonic traps |
spellingShingle |
Excited states of exciton-polariton condensates in 2D and 1D harmonic traps Trallero-Giner, Carlos Collective excitations Quantum-wells Bose Light Spectroscopy Vortices Fluid Ciências Naturais::Ciências Físicas Science & Technology |
title_short |
Excited states of exciton-polariton condensates in 2D and 1D harmonic traps |
title_full |
Excited states of exciton-polariton condensates in 2D and 1D harmonic traps |
title_fullStr |
Excited states of exciton-polariton condensates in 2D and 1D harmonic traps |
title_full_unstemmed |
Excited states of exciton-polariton condensates in 2D and 1D harmonic traps |
title_sort |
Excited states of exciton-polariton condensates in 2D and 1D harmonic traps |
author |
Trallero-Giner, Carlos |
author_facet |
Trallero-Giner, Carlos Durnev, M. V. Núñez Fernández, Yuriel Vasilevskiy, Mikhail López-Richard, V. Kavokin, Alexey |
author_role |
author |
author2 |
Durnev, M. V. Núñez Fernández, Yuriel Vasilevskiy, Mikhail López-Richard, V. Kavokin, Alexey |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Trallero-Giner, Carlos Durnev, M. V. Núñez Fernández, Yuriel Vasilevskiy, Mikhail López-Richard, V. Kavokin, Alexey |
dc.subject.por.fl_str_mv |
Collective excitations Quantum-wells Bose Light Spectroscopy Vortices Fluid Ciências Naturais::Ciências Físicas Science & Technology |
topic |
Collective excitations Quantum-wells Bose Light Spectroscopy Vortices Fluid Ciências Naturais::Ciências Físicas Science & Technology |
description |
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 inmicrowires 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 lambda N/(2L(y)) (lambda 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 (lambda > 0) and attractive (lambda < 0) interactions. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-05-27 2014-05-27T00:00:00Z |
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://hdl.handle.net/1822/32122 |
url |
http://hdl.handle.net/1822/32122 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Physical Review B: Condensed Matter and Materials Physics 89 (2014) 205317 1098-0121 10.1103/PhysRevB.89.205317 http://journals.aps.org/prb/abstract/10.1103/PhysRevB.89.205317 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
American Physical Society |
publisher.none.fl_str_mv |
American Physical Society |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799132326008979456 |