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 31 for “"Quantum Emitters"”.
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Resonance fluorescence of novel quantum emitters
Quantum dots (QD) emitting near the telecommunication O-band and excitons believed to be localized on defects in WSe2 monolayers are investigated using optical spectroscopy and resonance fluorescence (RF). The development of light sources emitting around 1300 nm is motivated primarily by the …
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Lead-related quantum emitters in diamond
This thesis reports on quantum emission from Pb-related color centers in diamond following ion implantation and high temperature vacuum annealing. First-principles calculations predict a negatively-charged Pb-vacancy center in a split-vacancy configuration, with a zero-phonon transition around 2.3 …
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Engineering the optical quality of quantum emitters in WSe₂
… platform hosting localised single photon emitters. These single photons are of particular interest as they are the building blocks for many quantum technologies including quantum communication and quantum computing. This thesis focusses on the optical properties of these emitters, and how …
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Light-Induced Collective Interactions in Arrays of Quantum Emitters
… in ancient Greece to the development of quantum mechanics and quantum electrodynamics in the past century. While the response of a single quantum emitter to light is well understood, the radiative properties of an ensemble of closely spaced emitters are far more intricate. Coupling to a …
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Design of Efficient Acoustic Interfaces for Quantum Emitters in Diamond
Solid-state atomic defects--known as quantum emitters--in diamond are a valuable technology for quantum networking and computing due to their optically active transitions that interface on-chip systems with flying photons as well as their long-lived spin transitions that function as quantum …
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Large-Scale Characterization of Quantum Emitters in High-Purity Diamond
Solid state quantum memories, such as color centers in diamond, are a leading platform for the distribution of quantum information. Quantum repeaters will require many qubit registers at every quantum network node, each with long-lived spin states and high-quality single photon emissions. Here, we …
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Control of Excitons and Quantum Emitters in Two-Dimensional Materials
… photonic circuits. Recently, single-photon emitters have been identified in an insulating hexagonal boron nitride (hBN) and semiconducting transition metal dichalcogenides (TMDs). In spite of the unique characteristics of these emitters, they suffer from large inhomogeneous distribution …
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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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Optimisation, Stabilisation, and Localisation of Quantum Emitters in Layer-Engineered Hexagonal Boron Nitride
… partner. The discovery of its ability to host quantum emitters from defect sites within its crystal structure has stimulated a recent increase in publications exploring their properties. The large bandgap hBN possesses, so juxtaposed to the conductive properties of graphene, and its ability to …
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Statistical metrology and process control of quantum devices
Quantum emitters, such as color centers (e.g., nitrogen-vacancy color centers in diamond), have a wide range of applications in quantum information processing, bioimaging, and quantum sensing. Such quantum emitters are typically addressed optically and store their quantum state as an electron spin …
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Plasmonics for On-Chip Photodetectors and Light Sources
<p>Quantum emitters and thermal photodetectors serve as key building blocks for future quantum information and sensing systems. Their properties can be significantly enhanced by integrating them with nanostructured elements, tailoring their interactions with incident optical fields. Quantum …
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Coherence, Dephasing, and Quantum Interference in Colloidal Perovskite Nanocrystals
As the development of photonic quantum technologies continues to be pushed forward, the need for a source of quantum light, the so-called quantum emitter, has been ever-growing. The requirements for a quantum emitter are onerous: indistinguishable photon or entangled photon pairs need to be …
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Control of Optical Processes in Diamond using Plasmonic Nanogap Cavities
<p>Solid-state quantum emitters embedded in carefully engineered nanostructures could enable a new generation of quantum information and sensing technologies, including networked processors for quantum computing and precise monitors of temperature and strain at the nanoscale. The primary goal when …
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Investigating photophysics in colloidal semiconductor quantum dots through photon-correlation methods
Colloidal semiconductor quantum dots (QDs) exhibit interesting photophysical properties due to their quantum-confined nature. Due to their bright and stable photoluminescence, they have been widely used in a variety of applications, including lasing, light emitting diodes (LEDs), solar cells, …
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A Vertically Loaded Diamond Microdisk Resonator (VLDMoRt) towards a Scalable Quantum Networks
… for increasing the efficiency and scalability of quantum devices based on diamond quantum emitters.
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Plasmonic metamaterial for structural color printing and spontaneous emission control
… perfect absorber, structural color printing, and quantum emitter spontaneous emission enhancement.</p><p>In this dissertation two of the most important applications will be addressed. The first application is structure color printing and the other is to control the spontaneous emission rate of …
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Controlling Quantum Systems for Computation and Communication
Quantum information processing has the potential of implementing faster algorithms for numerous problems, communicating with more secure channels, and performing higher precision sensing compared to classical methods. Recent experimental technology advancement has brought us a promising future of …
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Large-scale programmable silicon photonics for quantum and classical machine learning
… platform for applications in quantum and classical machine learning and information processing. Using our developed processor architecture, we then present a nanophotonic Ising sampler for noise-assisted combinatorial optimization. Subsequently, we present a novel, …
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Towards quantum information processing with diamond color centers
… requirements summarize the key properties that quantum systems should have to be useful for quantum computing. The work in this thesis focuses on one of the leading solid-state quantum systems, the nitrogen vacancy (NV) center in diamond. The NV has emerged as an excellent quantum sensor, in …
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