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 26 for “"neutral atom"”.
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Fast, Nondestructive Quantum-state Readout of a Single, Trapped, Neutral Atom
<p>Experimental systems that trap single, neutral atoms have recently emerged as a promising platform for experiments in a range of disciplines such as quantum information science, quantum simulation and fundamental light-atom interaction. In this thesis, I build such a system and use it to trap …
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A Cavity-Coupled Rydberg Atom Array Platform for Quantum Computing
Neutral atom systems have long been the test bed for complex quantum physics. Recently, much of the focus in quantum research has shifted from fundamental science to applications in quantum computation. Although several different hardware platforms have made strides in their capabilities in this …
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A Cavity-Coupled Rydberg Atom Array for Quantum Science and Quantum Computing
Neutral atom arrays 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. …
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Automated Fiber Coupling with Actuated Mirrors
Almost all atomic physics experiments rely on precise alignment of lasers. For example, optical fields are used to cool, control, and image atoms in neutral atom arrays. In this thesis, we present a design for mirrors actuated by servos that allow the precise, repeatable alignment of lasers in free …
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CONFINED ULTRACOLD BOSONS IN ONE DIMENSIONAL OPTICAL LATTICES
… my research covering the field of ultracold atoms loaded in optical lattices. The static and dynamical properties of atoms in combined periodic and parabolic potentials are studied, with a focus on the strongly interacting regimes. Because parabolic magnetic and optical potentials are …
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Observational analysis of the compositional variation in solar filaments
… of filament material, possibly due to neutral atom cross-field diffusion. For more highly-varying material; there is a weak direct relation between a change in absorption and a change in the relative abundance of helium, and erupting filaments exhibit increasing absorption and a spatial …
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Casimir-Polder interaction in second quantization
The Casimir-Polder interaction between a single neutral 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 …
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CORRELATED PHOTON PAIRS AND MULTIPHOTON STATES FROM A COLD ATOMIC ENSEMBLE
… photon pairs are vital for interfacing neutral atom systems and realizing distributed quantum networks. This thesis presents the realization and characterization of a high-brightness, temporally correlated photon-pair source at near-resonant wavelengths of 780 nm and 795 nm in an …
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Imaging and controlling atoms and semiconductor spins with advanced optical microscopy
… outperform their classical counterparts. Atoms and atom-like semiconductor spins are outstanding quantum objects in which such quantum technologies are implemented. In developing quantum systems, optical microscopy is central to controlling these quantum objects with their distinct …
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Quantum-Mechanical Approach to Collision-Induced Radiative Emissions
Charge exchange is a process that occurs in an atomic collision where an electron from one of the colliding particles is transferred to the other; typically from a neutral atom or molecule to an ion. Electrons transferred into an excited energy state then decay into a lower-energy state and emit …
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Data Analysis of the Cosmic Microwave Background
… gas of electrons, protons, neutrons, some light atomic nuclei and photons. The universe at that time was optically thick as the photons could not travel very far before being scattered on electrons in the dense gas. The temperature was too hot for the electrons to combine with the nuclei and form …
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Integrated-Photonics Devices and Architectures for Advanced Cooling of Trapped Ions
… integrated control for trapped-ion and neutral-atom systems.
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Spatial Emission and Polarization Control in Integrated Photonics for Optical-Trapping and Trapped-Ion Systems
… integrated manipulation of trapped-ion and neutral-atom quantum systems. Finally, we develop key polarization-diverse integrated-photonics devices and utilize them to implement a variety of integrated-photonics-based polarization-gradient-cooling systems, culminating in the first …
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Coherent control of Rydberg atoms using sub-kHz linewidth excitation lasers
… development of a new experimental apparatus for neutral atom quantum computing with Rydberg atoms. We describe the construction and characterisation of three continuous wave lasers stabilised simultaneously on a ultrahigh finesse Ultra-low-expansion (ULE) cavity, providing long-term stability and …
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Laser Cooling of Antihydrogen
Antihydrogen, the simplest atomic antimatter system, is an excellent platform to search for matter- antimatter asymmetries. The kinetic energy (and thus velocity) of synthesized antihydrogen trapped in the laboratory setting is very large relative to the energy well depth of the trap providing the …
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High-resolution studies of charge exchange in supernova remnants with Magellan, XMM-Newton, and Micro-X
… the semi-resonant transfer of an electron from a neutral atom to an excited state in an energetic ion, can occur in plasmas where energetic ions are incident on a cold, at least partially neutral gas. Supernova remnants, especially in the immediate shock region, provide conditions conducive to …
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Toward Practical Quantum Computing Systems with Intelligent Cross-Stack Co-Design
… (FPQA) implemented with emerging reconfigurable neutral atom arrays. This architecture leverages movable atoms for routing two-qubit gates and we optimize atom movements and gate scheduling for high scalability and parallelism. To enhance reliability, I will introduce QuantumNAS and TorchQuantum, …
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Kinetic Modeling of Ionospheric Outflows Observed by the VISIONS-1 Sounding Rocket
… The VISIONS-1 (VISualizing Ion Outflow via Neutral atom imaging during a Substorm) sounding rocket was launched on Feb. 7, 2013 at 8:21 UTC from Poker Flat, Alaska, into an auroral substorm with the objective of identifying the drivers and dynamics of nightside ion outflow at altitudes where …
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Ion Temperatures in Earth's Inner Magnetosphere: Ring Current Dynamics, Transient Effects, and Data-Model Comparisons
… maps derived from remotely imaged energetic neutral atom (ENA) measurements. The high-speed-stream-driven event on 22 July 2009 and the coronal mass ejection-driven event on 30-31 October 2013 are simulated and compared against identical simulations using a statistically derived boundary …
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