New Frontiers in Quantum Simulation of an Extended Dicke Model and Active Cooling

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dc.contributor.advisorKono, Junichiro
dc.creatorMarquez Peraca, Nicolas
dc.date.accessioned2023-09-01T20:42:17Z
dc.date.created2023-08
dc.date.issued2023-08-08
dc.date.submittedAugust 2023
dc.date.updated2023-09-01T20:42:17Z
dc.description.abstractGroundbreaking discoveries in the fields of light-matter interactions and thermoelectrics in the past two decades have profoundly shaped our understanding of how photons, electrons, and phonons interact. Increased control over the quality of engineered systems, novel measurement techniques, and quantitative improvements in theory are the driving force behind modern, record-high values of light-matter coupling strength and thermoelectric performance. In this work, I bring together experimental and theoretical techniques to study the interplay between magnons and spins in ErFeO3, photons and plasmons in Fischer nanostructures, and electrons and phonons in thermoelectric active cooling materials. Specifically, I perform terahertz time-domain magneto-spectroscopy measurements on the rare-earth orthoferrite ErFeO3 as a function of temperature and magnetic field, and we propose a novel protocol that uses this material as a solid-state quantum simulator of an extended Dicke model. Then, I conduct aperture-based scanning near-field optical microscopy measurements on Fischer nanostructures, and observe field enhancement and localization with resolution beyond the diffraction limit. Lastly, I study active cooling under arbitrary external thermal resistances, and map out the regions where active cooling is advantageous compared to Carnot-limit refrigeration. These results lead to a deeper understanding of fundamental interactions in magnetic, semiconducting, and low-dimensional materials, and further motivate translating research into engineering solutions.
dc.embargo.lift2024-02-01
dc.embargo.terms2024-02-01
dc.format.mimetypeapplication/pdf
dc.identifier.citationMarquez Peraca, Nicolas. "New Frontiers in Quantum Simulation of an Extended Dicke Model and Active Cooling." (2023) Diss., Rice University. https://hdl.handle.net/1911/115270.
dc.identifier.urihttps://hdl.handle.net/1911/115270
dc.language.isoeng
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.
dc.subjecterbium orthoferrite
dc.subjectterahertz magneto-spectroscopy
dc.subjectFischer nanostructures
dc.subjectscanning near-field optical microscopy
dc.subjectthermoelectrics
dc.subjectactive cooling
dc.titleNew Frontiers in Quantum Simulation of an Extended Dicke Model and Active Cooling
dc.typeThesis
dc.type.materialText
thesis.degree.departmentPhysics and Astronomy
thesis.degree.disciplineNatural Sciences
thesis.degree.grantorRice University
thesis.degree.levelDoctoral
thesis.degree.nameDoctor of Philosophy
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