Estudio de los efectos térmicos en moléculas de excitones y sus aplicaciones a la termometría

dc.contributor.advisorVinck Posada, Herbert
dc.contributor.authorRiveros Mesa, Astrid Camila
dc.date.accessioned2024-07-02T22:51:39Z
dc.date.available2024-07-02T22:51:39Z
dc.date.issued2024
dc.descriptionilustraciones (principalmente a color), diagramasspa
dc.description.abstractEn la presente tesis, se llevó a cabo una exhaustiva revisión bibliográfica del estado del arte de los sistemas ópticos cuánticos, centrándose en la utilización de la temperatura como variable de estudio. Se exploró el sistema de dos puntos cuánticos en una microcavidad, comparando constantemente el efecto de interacción Förster entre ambos puntos cuánticos y la desintonía entre la frecuencia de los fotones confinados en la microcavidad y la frecuencia de cada excitón. El sistema Hamiltoniano fue analizado utilizando la teoría de James Cummings, generando diagramas de dispersión y estudiando los coeficientes de Hopfield para diversos valores de constantes de Förster y desintonía. Posteriormente, se examinó el entrelazamiento entre la materia y la radiación, así como el entrelazamiento entre las excitaciones de los dos puntos cuánticos, revelando valores significativos de entrelazamiento. Se abordaron las disipaciones del sistema a 0 K mediante la ecuación maestra y los operadores de Lindblad, considerando factores como el bombeo incoherente, imperfecciones en las paredes de la cavidad y la emisión espontánea de los dos puntos cuánticos, calculando los espectros de emisión. Finalmente, se analizaron los efectos de la temperatura en cada uno de los parámetros del sistema. Se incorporó el análisis con el desfase bipolar, recalculando los espectros de emisión para diferentes temperaturas y constantes de interacción Förster cuando el sistema está en resonancia. Se llevó a cabo una discusión sobre cómo los parámetros de la frecuencia de emisión, su ancho y su altura, pueden proporcionarnos información sobre la temperatura del sistema. Además, se analizó cómo en la región de máximo entrelazamiento se pueden utilizar como parámetros para calibrar un posible termómetro (Texto tomado de la fuente).spa
dc.description.abstractThis thesis presents a comprehensive bibliographic review of the latest advancements in quantum optical systems, specifically emphasizing the role of temperature as a pivotal study variable. Central to this investigation is the behavior of a two quantum dot system within a microcavity. This study intricately compares the Förster interaction effects among the quantum dots with the detuning observed between the confined photon frequencies in the microcavity and the excitonic frequencies. Employing the James-Cummings theoretical framework, the Hamiltonian system was meticulously dissected, leading to the generation of dispersion diagrams and an indepth analysis of Hopfield coefficients across a range of Förster constants and detuning values. The research then delves into the realms of entanglement, examining both the matter-radiation interplay and the excitonic interactions within the two quantum dots. This exploration revealed substantial entanglement metrics, contributing significantly to our understanding of quantum coherence and interaction dynamics. A critical aspect of this study was addressing system dissipations at 0 K. Utilizing the master equation and Lindblad operators, the analysis incorporated various factors such as incoherent pumping, cavity wall imperfections, and spontaneous emission from the quantum dots, culminating in the precise calculation of emission spectra. In the final phase of this thesis, the focus shifts to the effects of temperature on each system parameter. This analysis extends to the consideration of bipolar dephasing, recalculating emission spectra across different temperatures and Förster interaction constants, particularly under resonant conditions. A discussion was conducted on how the parameters of emission frequency, its width, and its height can provide information about the system’s temperature. Furthermore, an analysis was undertaken regarding how these parameters can be utilized in the region of maximum entanglement to calibrate a potential thermometer (Texto tomado de la fuente).eng
dc.description.degreelevelMaestríaspa
dc.description.degreenameMagíster en Ciencias - Físicaspa
dc.format.extentxiv, 82 páginasspa
dc.format.mimetypeapplication/pdfspa
dc.identifier.instnameUniversidad Nacional de Colombiaspa
dc.identifier.reponameRepositorio Institucional Universidad Nacional de Colombiaspa
dc.identifier.repourlhttps://repositorio.unal.edu.co/spa
dc.identifier.urihttps://repositorio.unal.edu.co/handle/unal/86360
dc.language.isospaspa
dc.publisherUniversidad Nacional de Colombiaspa
dc.publisher.branchUniversidad Nacional de Colombia - Sede Bogotáspa
dc.publisher.facultyFacultad de Cienciasspa
dc.publisher.programBogotá - Ciencias - Maestría en Ciencias - Físicaspa
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dc.rights.accessrightsinfo:eu-repo/semantics/openAccessspa
dc.rights.licenseAtribución-NoComercial-CompartirIgual 4.0 Internacionalspa
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/spa
dc.subject.ddc530 - Físicaspa
dc.subject.lembFotonesspa
dc.subject.lembPhotonseng
dc.subject.lembÓptica cuánticaspa
dc.subject.lembQuantum opticseng
dc.subject.otherPuntos cuánticosspa
dc.subject.otherQuantum dotseng
dc.subject.proposalPuntos Cuánticosspa
dc.subject.proposalEntrelazamientospa
dc.subject.proposalMetrología Cuánticaspa
dc.subject.proposalInteracción Försterspa
dc.subject.proposalEspectros de emisiónspa
dc.subject.proposalTermometría Cuánticaspa
dc.subject.proposalExcitonesspa
dc.subject.proposalMicrocavidadesspa
dc.subject.proposalEcuación Maestraspa
dc.subject.proposalDesfase Bipolarspa
dc.subject.proposalSensibilidadspa
dc.subject.proposalQuantum Dotseng
dc.subject.proposalEntanglementeng
dc.subject.proposalQuantum Metrologyeng
dc.subject.proposalFörster Interactioneng
dc.subject.proposalEmission Spectraeng
dc.subject.proposalQuantum Thermometryeng
dc.subject.proposalExcitonseng
dc.subject.proposalMicrocavitieseng
dc.subject.proposalMaster Equationeng
dc.subject.proposalBipolar Dephasingeng
dc.subject.proposalSensitivityeng
dc.titleEstudio de los efectos térmicos en moléculas de excitones y sus aplicaciones a la termometríaspa
dc.title.translatedStudy of the Thermal Effects in Exciton Molecules and its Applications on Thermoemtryeng
dc.typeTrabajo de grado - Maestríaspa
dc.type.coarhttp://purl.org/coar/resource_type/c_bdccspa
dc.type.coarversionhttp://purl.org/coar/version/c_b1a7d7d4d402bccespa
dc.type.contentTextspa
dc.type.driverinfo:eu-repo/semantics/masterThesisspa
dc.type.versioninfo:eu-repo/semantics/draftspa
dcterms.audience.professionaldevelopmentEstudiantesspa
dcterms.audience.professionaldevelopmentInvestigadoresspa
dcterms.audience.professionaldevelopmentMaestrosspa
dcterms.audience.professionaldevelopmentBibliotecariosspa
dcterms.audience.professionaldevelopmentEstudiantesspa
dcterms.audience.professionaldevelopmentInvestigadoresspa
dcterms.audience.professionaldevelopmentMaestrosspa
dcterms.audience.professionaldevelopmentProveedores de ayuda financiera para estudiantesspa
oaire.accessrightshttp://purl.org/coar/access_right/c_abf2spa

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