Coherent properties and Rabi oscillations in two-level donor systems

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dc.contributor.authorLatge, A.
dc.contributor.authorRibeiro, F. J.
dc.contributor.authorBruno-Alfonso, A.
dc.contributor.authorOliveira, L. E.
dc.contributor.authorBrandi, H. S.
dc.contributor.institutionUniversidade Federal Fluminense (UFF)
dc.contributor.institutionUniv Estadual Feira Santana
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionUniversidade Federal do Rio de Janeiro (UFRJ)
dc.date.accessioned2014-05-20T13:26:30Z
dc.date.available2014-05-20T13:26:30Z
dc.date.issued2006-06-01
dc.description.abstractCoherent properties and Rabi oscillations in two-level donor systems, under terahertz excitation, are theoretically investigated. Here we are concerned with donor states in bulk GaAs and GaAs-(Ga,Al)As quantum dots. We study confinement effects, in the presence of an applied magnetic field, on the electronic and on-center donor states in GaAs- (Ga,Al)As dots, as compared to the situation in bulk GaAs, and estimate some of the associated decay rate parameters. Using the optical Bloch equations with damping, we study the time evolution of the Is and 2p(+) states in the presence of an applied magnetic field and of a terahertz laser. We also discuss the role played by the distinct dephasing rates on the photocurrent and calculate the electric dipole transition moment. Results indicate that the Rabi oscillations are more robust as the total dephasing rate diminishes, corresponding to a favorable coherence time.en
dc.description.affiliationUniv Fed Fluminense, Dept Fis, BR-24210340 Niteroi, RJ, Brazil
dc.description.affiliationUniv Estadual Feira Santana, Dept Fis, BR-44031460 Feira de Santana, BA, Brazil
dc.description.affiliationUniv Estadual Paulista, Fac Ciências, Dept Matemat, BR-17033360 Bauru, SP, Brazil
dc.description.affiliationUniv Estadual Campinas, Inst Fis, BR-13083970 Campinas, SP, Brazil
dc.description.affiliationUniv Fed Rio de Janeiro, Inst Fis, BR-21945970 Rio de Janeiro, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Fac Ciências, Dept Matemat, BR-17033360 Bauru, SP, Brazil
dc.format.extent419-422
dc.identifierhttp://dx.doi.org/10.1590/S0103-97332006000300050
dc.identifier.citationBrazilian Journal of Physics. São Paulo: Sociedade Brasileira Fisica, v. 36, n. 2A, p. 419-422, 2006.
dc.identifier.doi10.1590/S0103-97332006000300050
dc.identifier.fileWOS000238575800050.pdf
dc.identifier.issn0103-9733
dc.identifier.lattes1023310738730000
dc.identifier.scieloS0103-97332006000300050
dc.identifier.scopus2-s2.0-33746062454
dc.identifier.urihttp://hdl.handle.net/11449/8555
dc.identifier.wosWOS:000238575800050
dc.language.isoeng
dc.publisherSociedade Brasileira Fisica
dc.relation.ispartofBrazilian Journal of Physics
dc.relation.ispartofjcr1.082
dc.relation.ispartofsjr0,276
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectcoherent propertiespt
dc.subjectRabi oscillationspt
dc.subjecttwo-level donor systemspt
dc.titleCoherent properties and Rabi oscillations in two-level donor systemsen
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/scielo.php?script=sci_serial&pid=0103-9733&lng=en&nrm=iso
dcterms.rightsHolderSociedade Brasileira Fisica
unesp.author.lattes1023310738730000[3]
unesp.author.orcid0000-0002-6194-529X[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências, Baurupt
unesp.departmentMatemática - FCpt

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Bauru - FC - Faculdade de Ciências