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 79 for “"Quantum electrodynamics"”.
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Quantum electrodynamics and fundamental constants
… requires a careful study of the effects from quantum electrodynamics (QED) on the interaction between the electron and the nucleus.</p> <p>The two theoretical approaches for the evaluation of QED corrections are presented and discussed. Due to the presence of two energy scales from the binding …
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High energy scalar quantum electrodynamics.
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 1970
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Investigation on regulators in quantum electrodynamics
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1958.
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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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Quantum Networking using Waveguide Quantum Electrodynamics
… each responsible for a particular function. The quantum computer is an intricate system comprising fragile, error-prone parts known as qubits. Entanglement distribution across a network of non-local processing modules facilitates robust and extensible quantum computation. In modular quantum …
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Quantum electrodynamics in a damped cavity
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Physics, 1982.
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Waveguide quantum electrodynamics with superconducting qubits
Experiments in quantum optics have long been implemented with atoms in 3D free space or with atoms interacting with cavities. Over the past decade, the field of microwave quantum optics using superconducting circuits has gained a tremendous amount of attention. In particular, the confinement of …
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Radiation and reaction in scalar quantum electrodynamics
… radiation by accelerating charges in the scalar quantum electrodynamic theory. We investigate aspects of this theory in flat spacetime, and in a class of conformally flat and curved spacetimes. In particular, we show that in flat spacetime, the quantum-theoretic prediction for the emission of …
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Multimode Circuit Quantum Electrodynamics With Superconducting Metamaterial Resonators
<p>Superconducting devices in circuit quantum electrodynamics (cQED) systems are one of the leading approaches for realizing scalable quantum information processors. The combination of cQED architectures with multimode resonator systems can provide a flexible platform for performing analog quantum …
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A computational electromagnetic framework for waveguide quantum electrodynamics
… thesis, a framework for cavity and waveguide quantum electrodynamic (CQED, and WQED, respectively) problems is presented. The essence of this framework is to use the dyadic Green's function (DGF) to obtain the local density of states (LDOS) and radiative shift of a two-level system (TLS) …
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Non-equilibrium fluctuation induced-phenomena in quantum electrodynamics
… resulting from the stochastic nature of quantum and thermal fluctuations of electromagnetic currents and waves. Specifically, we study radiative heat transfer and Casimir forces by applying the scattering formalism that expresses results solely in terms of the classical scattering …
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Towards a Quantum Network with Waveguide Quantum Electrodynamics
Over the past twenty years, the field of quantum computing has progressed from the investigation of individual quantum systems towards the implementation of manyqubit processors. Distributing information processing over a quantum network consisting of many nodes that communicate via itinerant …
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Cavity quantum electrodynamics with ensembles of ytterbium-171
… 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 able to …
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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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Numerical analysis for quantum electrodynamics in the ultrastrong coupling regime
In the race towards achieving true quantum advantage, the development of a scalable and reliable quantum computer demands lower gate error rates, longer qubit coherence times, increased qubit connectivity, and enhanced controllability of qubit couplings. Addressing these challenges necessitates …
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A systematic computational study of cavity and waveguide quantum electrodynamics
… framework for cavity and waveguide quantum electrodynamics (CQED and WQED, respectively) is presented. By utilizing the classical dyadic Green's function, the quantum many body problem of multiple atoms interacting with an arbitrary lossless electromagnetic environment is reduced to …
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Towards a Modular Superconducting Quantum Processor using Chiral Waveguide Quantum Electrodynamics
As the field of superconducting quantum computing advances, networking qubits within a single system becomes essential for building modular processors. Modularity allows the system to circumvent scalability constraints and enable architectures and computational schemes that exploit non-local …
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Applied molecular quantum electrodynamics: geometric aspects of the efficiency of photonic interactions
This thesis presents applications of molecular quantum electrodynamics (MQED) to the analysis of resonance energy transfer (RET), molecular absorption and emission, and light scattering by molecules. An MQED framework describes such processes as a series of microscopic photonic interaction events. …
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Development of potential-based time domain integral equations for quantum electrodynamics modeling
Quantum technologies that significantly depend on electromagnetic effects are becoming of increasing interest to engineers. In many important cases, the quantum electrodynamics models that describe these technologies can be solved using information about the electromagnetic environment provided by …
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