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 16 of 16 for “"Optical Dipole Trap"”.
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Two-Photon Ionization of the Calcium 4S3D 1D2 Level in an Optical Dipole Trap
This thesis reports an optical dipole trap for atomic calcium. The dipole trap is loaded from a magneto-optical trap (MOT) of calcium atoms cooled near the Doppler limit (~1 mK). The dipole trap is formed by a large-frame argon ion laser focused to 20 microns into the center of the MOT. This laser …
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Trapping cold rubidium in a fiber
… of loading cold ⁸⁷Rb into a red-detuned optical dipole trap within a hollow core photonic fiber. This confines the atoms to 6 microns in two dimensions. We initially cooled the Rubidium in a magneto-optical trap. The great confinement of the Rubidium allows for increased optical depths …
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Loading rubidium atoms into a hollow core fiber
We demonstrate a procedure for cooling, trapping, and transferring rubidium atoms into a hollow core photonic band gap fiber. The atoms are first collected in a magneto-optical trap (MOT) and then cooled using polarization gradient cooling. Magnetic traps are then used to confine and transfer the …
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Trapping and Laser Cooling an Ensemble of Ytterbium-171 Atoms for use in an Atomic Clock
Optical lattice clocks require careful preparation of atomic ensembles in order to ensure homogeneous interactions with the clock laser. We demonstrate loading and laser cooling of an ensemble of ytterbium-171 atoms in a 2D optical dipole trap created by an optical cavity. Our loading method …
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Emergence of Collective Light Scattering in Atomic <sup>87</sup>Rb Samples
… the atomic samples are increasing in density and optical depth. As such, the spectroscopic properties of the atomic media are modified due to interactions among the particles in the ensemble. We report investigation of near-resonance light scattering from a cold atomic sample of 87Rb. Initially …
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Observation of nonlinear tunneling of a Bose-Einstein condensate in a single Josephson junction
… is provided by loading a BEC into an optical double well potential. It is realized by a superposition of a one-dimensional optical lattice with a focused laser beam optical dipole trap. The tunneling dynamics between the two potential wells exhibits two distinct dynamical regimes. For …
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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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Experiments with Bose-Einstein condensates in a double-well potential
Trapped atom interferometry was demonstrated with Bose-Einstein condensates in an optical double-well trap. Coherent splitting of trapped condensates was performed by deforming an optical single-well potential into a double-well potential, and the relative phase of the two split condensates was …
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Double-Loop Microtrap Array for Ultracold Atoms
A novel kind of magnetic microtrap is demonstrated for ultracold neutral atoms. It consists of two concentric loops of radii $r_1$ and $r_2$ having oppositely oriented currents. A magnetic field minimum is generated in three dimensions that can be used to trap the atoms with a trap depth of about 1 …
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Experimental Platform for a Box-Trapped Dipolar Quantum Gas
… a multitude of quantum phenomena that stem from dipole-dipole interactions, particularly their long-range and anisotropic nature. Consequentially, dipolar quantum gases make up an increasingly popular branch within an already thriving field of ultracold quantum gases. The thesis details the …
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Construction of a quantum gas microscope for fermionic atoms
… for experiments with ultracold atoms in optical lattices: the Fermi gas microscope. Improving upon similar designs for bosonic atoms, our Fermi gas microscope has the novel feature of being able to achieve single-site resolved imaging of fermionic atoms in an optical lattice; …
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Bose-Fermi mixtures of ultracold gases of dysprosium
Laser cooling and trapping of the most magnetic fermionic atom, dysprosium (Dy), may provide a framework to explore quantum liquid crystal (QLC) theory (Chapter 1). This thesis presents details of the Dy laser cooling and trapping apparatus including the laser systems at 421, 741, and 1064 nm, the …
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A Trapped Single Ion Inside a Bose-Einstein Condensate
… have been built. Systems of single or a few trapped ions have been used to demonstrate universal quantum computing algorithms and to detect variations of fundamental constants in precision atomic clocks. Now in our experiment we investigate how the two systems can be advantageously combined. …
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A tunable Bose-Einstein condensate for quantum interferometry
… they represents the matter analogue of the optical laser providing the maximum coherence allowed by quantum mechanics. Moreover, non-linear dynamic can be exploited in order to prepare entangled states of the system. The realization of entangled samples can lead to sub-shot noise sensitivity …
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A new apparatus to simulate fundamental interactions with ultracold atoms
… the two miscible components |F = ±1⟩ if trapped by a spin-independent potential, avoiding the known phenomenon of â€TMbuoyancyâ€TM. Studying the dynamics of such systems for sufficiently long times, with a mixture subject to Zeeman differential energy shifts, requires a specific effort …
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Ultracold atoms for synthetic one-dimensional quasicrystals
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms