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Localization of Bose-Einstein condensates in cavities induced by photon-atom interactions

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dc.contributor.authorGil, Pedro dos Santos
dc.contributor.institutionFaculty of Sciences
dc.contributor.institutionDepartment of Physics
dc.contributor.supervisorKonotop, Vladimir Vladlenovich
dc.date.accessioned2026-01-13T10:55:02Z
dc.date.available2026-01-13T10:55:02Z
dc.date.issued2025
dc.descriptionTese de Mestrado, Física (Física Nuclear e Partículas), 2025, Universidade de Lisboa, Faculdade de Ciências
dc.description.abstractWe consider a Bose-Einstein condensate loaded into an optical cavity subject to the combined action of an external potential and a cavity mode with mutually incommensurate periods. This configuration enables the localization of matter waves even in the absence of attractive two-body interactions. We analyze the families of the corresponding localized modes for both red- and bluedetuned atomic and cavity resonances in relatively shallow lattices. The parameter regimes supporting localization are identified. The system is found to exhibit multi-stability, previously discussed in terms of bistability, manifesting as distinct photon numbers under otherwise identical conditions. In addition, the system may display ”strict” bistability, characterized by two different atomic density distributions corresponding to the same photon number. The stability of the localized modes is examined.en
dc.formatapplication/pdf
dc.identifier.tid204175208
dc.identifier.urihttp://hdl.handle.net/10400.5/116579
dc.language.isoeng
dc.subjectCavity QED
dc.subjectBose–Einstein condensates
dc.subjectquasi-periodic potentials
dc.subjectlocalization
dc.titleLocalization of Bose-Einstein condensates in cavities induced by photon-atom interactionsen
dc.typemaster thesis
dspace.entity.typePublication
rcaap.rightsopenAccess

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