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 20 of 20 for “"cavity quantum electrodynamics"”.
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Cavity quantum electrodynamics with ensembles of ytterbium-171
… realization of a system applying the tools of cavity quantum electrodynamics to an atomic optical lattice clock. We design and implement a unique experimental cavity structure, with a small radius of curvature mirror on one side and a large mirror on the other side. With this structure, we are …
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Solid-state cavity quantum electrodynamics with spin ensembles
Quantum sensors have the potential to operate at fundamental physical performance limits. Among various quantum sensing platforms, solid-state spin emitters stand out due to advantageous characteristics such as room-temperature spin polarization and readout, atomic-scale spatial resolution, and …
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Theory for strongly coupled quantum dot cavity quantum electrodynamics - Photon statistics and phonon signatures in quantum light emission
Aktuelle Fortschritte in der Halbleitertechnologie etablieren ein neues physikalisches System, um quantenoptische Eigenschaften auf Nanoskalen zu untersuchen: ein Quantenpunkt in einem Mikroresonator. Im Falle einer starken Kopplung übertrifft die Stärke der Elektron-Licht Wechselwirkung die …
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Photonic crystal cavity with self-similar structure and single-photon Kerr nonlinearities
We propose a design of photonic crystal cavity with self-similar electromagnetic boundary conditions, that achieve ultrasmall mode volume (Vff). The electric energy density of a cavity mode can be maximized in the air or dielectric region, depending on the choice of boundary conditions. We …
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Towards infrared plasmonics in graphene
… including plasmon excitation with solid-state cavity quantum electrodynamics (QED).
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Casimir-Polder interaction in second quantization
… atom and a nearby surface, arising from the (quantum and thermal) fluctuations of the electromagnetic field, is a cornerstone of cavity quantum electrodynamics (cQED), and theoretically well established. Recently, Bose-Einstein condensates (BECs) of ultracold atoms have been used to test the …
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Tunable Three-Dimensional Photonic Crystal Microwave Resonator with Ultra-Small Mode Volume
… including communication, nonlinear optics, cavity quantum electrodynamics, and precision metrology. In this work, we did simulations and experiments on a design of three-dimensional (3D) dielectric photonic crystal (PhC) cavity (PhCC) based on ABCD woodpile structure. Low material loss of …
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Waveguide Quantum Electrodynamics with Superconducting Qubits
Experiments utilizing quantum optics have progressed rapidly in last few decades, particularly in the context of quantum computation, simulation, and communication. Early work in this field focused on implementations of cavity quantum electrodynamics (QED), where atoms, either natural or …
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A Cavity-Coupled Rydberg Atom Array for Quantum Science and Quantum Computing
… have rapidly emerged as a leading platform for quantum computing, boasting scalable, configurable arrays of single atoms trapped in optical tweezers, fast, high-fidelity entangling gates through Rydberg interactions, and programmable, parallelized control of qubit operations. Coupling an atom …
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Quantum Semiconductor Structures Dressed with Terahertz Cavity Photons
Cavity quantum electrodynamics (cQED) deals with an ensemble of two-level atoms coupled with a single mode of electromagnetic fields in a cavity. The theory of atomic cQED is well-developed, allowing one to make precise predictions for the quantum dynamics of atom–photon hybrids, indispensable for …
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Enhanced light-atom interaction in an optical resonator
Cavity quantum electrodynamics is a powerful platform for manipulating photonƯatom interactions. In this thesis, we explore its applications in photonic and atomic state preparation. With an optical cavity and an ensemble of cesium atoms, we demonstrate that, for two light fields [psi]s (signal) …
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Non-Hermitian Whispering Gallery Mode Optical Microresonators and Their Applications
… microlasers, opto-mechanics, frequency comb, and cavity quantum electrodynamics. Recently, WGM microresonators have proven to be an excellent platform to study non-Hermitian physics, due to the ease with which non-Hermiticity can be controlled via gain-loss distribution and modal coupling. …
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THz polaritonics : control, confinement, and strong light-matter interactions
… Our experiments, performed in both waveguide and cavity geometries, conclusively proved the formation of new quasiparticles we termed magnon-phonon-polaritons. We believe our results open up the possibility of using polaritonics for facile and coherent ultrafast control and conversion between …
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Exploring Novel Quantum Physics Using Ytterbium-171 in An Optical Cavity
In this thesis, I present the development of a cavity quantum electrodynamics (CQED) system using single or multiple ensembles of ytterbium-171 atoms and its use for quantum metrology and quantum information science investigations. We develop and study a unified theoretical framework that describes …
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Raman Cooling to High Phase Space Density
Experiments on quantum degenerate gasses have become widespread since the first experimental observations of Bose-Einstein condensates (BECs) a few decades ago. Traditionally such experiments have relied heavily on evaporation to produce their quantum degenerate Bose or Fermi gases. Although …
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Modelling and Exploiting the Hyperfine Structure of Alkali Atoms for Generation of Nonclassical Light and Rydberg-Atom-Based Field Sensing
Alkali atoms are a workhorse in quantum optics, owing to the relative simplicity of their elec- tronic structure, which affords remarkable and reliable control over their behaviour. In particular, the ability to probe and manipulate alkali atoms with electromagnetic fields provides an important …
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Fluctuation-induced interactions and nonlinear nanophotonics
… other interesting dynamical effects. Using a quantum-mechanical description of light, based on cavity quantum electrodynamics, similar enhancement effects are demonstrated at the single-photon level, leading to the possibility of achieving all-optical switching of a single signal photon by a …
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HIGH PERFORMANCE NANOPHOTONIC CAVITIES AND INTERCONNECTS FOR OPTICAL PARAMETRIC OSCILLATORS AND QUANTUM EMITTERS
… photonic crystals, microring resonators, and quantum emitters produce useful states of light, like solitons or single photons, through carefully engineered light-matter interactions. However, practical devices demand advanced integration techniques to meet the needs of cutting-edge …
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Fluctuation-mediated interactions of atoms and surfaces on a mesoscopic scale
Thermal and quantum fluctuations of the electromagnetic near field of atoms and macroscopic bodies play a key role in quantum electrodynamics (QED), as in the Lamb shift. They lead, e.g., to atomic level shifts, dispersion interactions (Van der Waals-Casimir-Polder interactions), and state …