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 2210 for “"atoms"”.
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Quantum dynamics of ultracold atoms in inhomogeneous magnetic fields : from ground state atoms to Rydberg atoms
… of the quantum dynamics of ultracold atoms in the presence of external inhomogeneous magnetic fields. We discuss the behavior of ground state atoms inside typical magnetic field configurations. Such atoms can be approximately treated as neutral point-like particles which carry a …
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Transport of muonic atoms
Transport of muonic hydrogen and deuterium atoms in gaseous hydrogen and deuterium is studied in the diffusion approximation and by means of the multiple collision expansion. The diffusion coefficient is derived. Scattering kernels are computed from the kinematics of an inelastic binary collision. …
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QUANTUM TRANSPORT WITH COLD ATOMS
… of quantum matter. The interaction between atoms, the type of atoms and their confinement can be designed to simulate quantum transport phenomena that are often difficult to realize within solid state devices. Recent advances in light-shaping techniques make it possible to engineer circuits …
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Evaporative cooling of sodium atoms
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1995.
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Dynamical effects in pionic atoms
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 1984
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Optical imaging of Rydberg atoms
… induced transparency (EIT) in Rydberg atoms in order to observe optical nonlinearities at the single photon level. ⁸⁷Rb atoms are trapped and cooled using a magneto-optical trap (MOT) and a far off resonance dipole trap (FORT). Once the system is prepared, a ladder EIT scheme with …
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Infrared Chemiluminescence Study of Reactions Between Oxygen Atoms and Carbon Disulfide and Oxygen Atoms and Acetylenes
Made available in DSpace on 2014-12-13T20:09:50Z (GMT). No. of bitstreams: 1 7616143.pdf: 3016253 bytes, checksum: 16a0a6c5f7cb6921b51c1264e9ce95a0 (MD5) Previous issue date: 1976
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Mixtures of Bosonic and Fermionic atoms
Ziel der Arbeit war die systematische theoretische Behandlung von Gemischen aus bosonischen und fermionischen Atomen in einem Parameterbereich, der sich zur Beschreibung von aktuellen Experimenten mit ultra-kalten atomaren Gasen eignet. Zuerst wurde der Formalismus der Quantenfeldtheorie auf …
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Circles: Quantum Dots and Single Atoms
L'abstract è presente nell'allegato / the abstract is in the attachment
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Quantum technologies with superconducting artificial atoms
… technologies in superconducting artificial atoms. The objectives of the thesis are twofold. On the one hand, we study advanced control of the quantum states of individual artificial atoms, tailored at robust and faithful quantum information processing in complex architectures and at the …
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Quantum Transport Experiments with Ultracold Atoms
… describes a series of experiments with ultracold atoms in custom optical potentials, detailing quantum simulators developed for analysing the quantum transport properties of specific systems of interest. Two environments in particular are investigated: the quantum chaotic system of the deltakicked …
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Ultra-Cold Atoms on Optical Lattices
In the second half of the dissertation, we investigate the problem of vortex trapping in cyclically coupled Bose-Josephson junctions. Starting with N independent BECs we couple the condensates through Josephson links and allow the system to reach a stable circulation by adding a dissipative term in …
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Ultracold fermionic atoms in disordered potentials
This thesis describes the construction of an experimental apparatus to study disorder physics using ultracold fermionic atomic gases. We use this apparatus to realize 3D Anderson localization for the first time for quantum matter waves. We provide the first measurement of how the mobility edge—a …
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Momentum-space lattices for ultracold atoms
… uses a novel type of ""synthetic"" dimension for atoms of a Bose–Einstein condensate, which we call a momentum-space lattice, to emulate one-dimensional lattice models. The idea of a synthetic dimension or synthetic lattices is a useful construct to describe how the particle dynamics can evolve in …
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Quasicrystalline optical lattices for ultracold atoms
… both growth processes and stability. Ultracold atoms in optical lattices offer an ideal, yet untested environment for investigating quasicrystals. Optical lattices, i.e. standing waves of light, allow the defect-free formation of a large variety of potential landscapes, including quasiperiodic …
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Ultra-cold collisions of identcial atoms
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1995.
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Learning to Model Atoms Across Scales
The understanding of atoms and how they interact forms the foundation of modern natural science, as well as material and drug discovery efforts. Computational chemistry methods such as density functional theory and molecular dynamics simulation can offer an unparalleled spatiotemporal resolution …
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