Show simple item record

dc.contributor.advisorBasu, Jaydeep Kumar
dc.contributor.authorYadav, Ravindra Kumar
dc.date.accessioned2021-04-22T11:30:49Z
dc.date.available2021-04-22T11:30:49Z
dc.date.submitted2020
dc.identifier.urihttps://etd.iisc.ac.in/handle/2005/5086
dc.description.abstractThere is much current interest in coupling emitters, such as fluorescing dye molecules and semiconductor quantum dots to plasmonic systems. Controlling the electromagnetic interactions between quantum emitters and the plasmonic system in the weak, intermediate, and strong coupling regimes has focused on an intense research effort in recent years. The weak and intermediate coupling regimes are associated with enhancement of the emission and absorption rates of nearby resonant emitters, while the strong coupling regime allows for coherent energy transfer between emitters and plasmonic system. Interest in this topic is motivated by the ability of plasmonic system to confine light to sub diffraction-limited mode volumes, which can drive coherence effects in collective quantum emitter systems, leading to applications in coherent light generation, photochemistry, quantum information processing, and quantum photonic fluids. In the first part of my thesis, I will discuss the experimental and theoretical study of room-temperature tunable coupling of single-photon emitting colloidal quantum dots(CQDs) to localised and delocalised modes in plasmonic nanocavity arrays using second-order photon correlation and time-resolved photoluminescence measurement. We will also discuss experimental evidence of indirect excitation of remote CQDs mediated by both the modes in the plasmonic arrays and propose a model to explain these observations. The second part of my thesis focuses on room temperature strong coupling between excitons in CQD assembly and surface lattice resonances in Plasmonic lattices and the emergence of the additional polaritonic peak in photoluminescence spectra of strongly coupled CQD-plasmonic lattice hybrid templates. In the third work, we will discuss the experimental and theoretical study of long-range optical energy propagation due to strongly coupled CQD-plasmonic lattice devices.The last part of my thesis focuses on the observation of photonic spin momentum locking in achiral CQD coupled to a special class of plasmonic metamaterial with hyperbolic isofrequency, known as hyperbolic metamaterial(HMM). We provide a theoretical explanation for the emergence of spin momentum locking through rigorous modeling based on photon Green’s function where pseudo spin of light arises from coupling of CQDs to evanescent modes of HMM.en_US
dc.language.isoen_USen_US
dc.rightsI grant Indian Institute of Science the right to archive and to make available my thesis or dissertation in whole or in part in all forms of media, now hereafter known. I retain all proprietary rights, such as patent rights. I also retain the right to use in future works (such as articles or books) all or part of this thesis or dissertationen_US
dc.subjectPlasmonic latticeen_US
dc.subjectQuantum dotsen_US
dc.subjectMetamaterialen_US
dc.subjecthyperbolic metamaterialen_US
dc.subject.classificationResearch Subject Categories::NATURAL SCIENCES::Physicsen_US
dc.titleStudy of room temperature coupling of colloidal quantum dots to plasmonic arrays and metamaterials: from single quantum dot to quantum dot assembliesen_US
dc.typeThesisen_US
dc.degree.namePhDen_US
dc.degree.levelDoctoralen_US
dc.degree.grantorIndian Institute of Scienceen_US
dc.degree.disciplineFaculty of Scienceen_US


Files in this item

This item appears in the following Collection(s)

Show simple item record