Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"Purcell Effect"”.
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Plasmonic metamaterial for structural color printing and spontaneous emission control
… used to enhance the spontaneous emission through Purcell effect”--Abstract, page iv.</p>
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Two classes of unconventional photonic crystals
… bandgap, which turns out to be related to the Purcell effect. An extension of this band theoretical approach is then used to study dark-state polaritons in -type atomic media. The second class of unconventional photonic crystal consists of two dimensional photonic crystals that break …
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Optical cavity integrated surface ion trap for enhanced light collection
… trap with an optical cavity and employing the Purcell effect for enhancing the light collection. Remote entanglement can be used as a resource for a quantum repeater for provably secure long-distance communication or as a method for communicating within a distributed quantum information …
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Fluctuation-mediated interactions of atoms and surfaces on a mesoscopic scale
… interactions), and state broadening (Purcell effect) because the field is subject to boundary conditions. Such effects can be observed with high precision on the mesoscopic scale which can be accessed in micro-electro-mechanical systems (MEMS) and solid-state-based magnetic microtraps …
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Control of Optical Processes in Diamond using Plasmonic Nanogap Cavities
… designing these nanostructures is to utilize the Purcell effect to improve the emission rate, directionality and brightness of quantum emitters, as long decay times, nondirectional emission and weak fluorescence limit their applications. One particularly promising emitter is the silicon vacancy …
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Functional 2D nanoparticle/polymer array : interfacial assembly, transfer, characterization, and coupling to photonic crystal cavities
… of cavities remains as a challenge in study of Purcell effect based on quantum electrodynamics. Taking advantage of interfacial assembly and transfer, we have achieved controlled deposition of quantum dots into high Q photonic microcavities and studied the modification of their optical …
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Active materials in photonic crystals
… emit more rapidly than in vacuum (known as the Purcell effect). Second, I study optically pumped lasing in three model systems: a Fabry-Perot cavity, a line of defects in a two-dimensional square lattice of rods, and a cylindrical photonic crystal. It is shown that high conversion efficiency can …
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Dynamic Acoustic Control of Semiconductor Quantum Dot-Based Devices for Quantum Light Generation
… The second main avenue of work investigates the effects of a surface acoustic wave, a mechanical displacement wave confined to the surface of a substrate, on the optical properties of quantum dots. In particular, we exploit the dynamic acoustically-induced tuning of the emission energy to …
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Plasmonics for On-Chip Photodetectors and Light Sources
… brightness and faster emission due to the Purcell effect, improving their maximum repetition rates as single photon sources, as well as decreasing saturation power leading to less pump induced noise. Further, the significant reduction in fluorescence lifetimes observed for quantum emitters …
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Heterogeneous integration of two-dimensional materials for on-chip optical interconnects
… photothermoelectric, photovoltaic and bolometric effects in graphene. Finally, light sources based on cavity-integrated 2D molybdenum disulfide show pronounced fluorescence enhancement owing to the Purcell effect in an optical cavity. An electrically-driven thermal light source of graphene in a …
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Fluctuation-induced interactions and nonlinear nanophotonics
… the study of various geometry-enabled resonant effects leading to strong nonlinear interactions. The starting point of this work is a coupled-mode theory framework for modeling a wide range of resonant nonlinear frequency-conversion processes in general geometries, ameliorating the need for …
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Theoretical investigation of metal-cavity nanolasers and nanoLEDs and comparison with experiments
… on metal cavity lasers. To understand the metal effect on metal-insulator-semiconductor-insulator-metal (MISIM) slab and circular waveguides, we derive their guiding conditions. The analysis gives us the intuition on metal cavity laser design. For the non-circular cross section of a nanodisk such …
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Chip-scale Photonic Devices for Light-matter Interactions and Quantum Information Processing
… air-slot photonic crystal cavity with ultrasmall effective mode volume, 2) Exciton-photon interactions between quantum dots and photonic crystal devices and non-classical photon source from a single quantum dot, and 3) Quantum controlled phase gate and phase switching based on quantum dots and …
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Light and Single-molecule Coupling in Plasmonic Nanogaps
… energy states remain unaltered, however profound effects emerge when the gap size is reduced to <1 nm. New hybridized energy states which are half-light and half-matter are then formed. Dispersion of these energies is studied by tuning the cavity resonance across the molecular resonance, revealing …