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Showing 1 to 20 of 87 for “"optical lattice"”.
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Disordered insulator in an optical lattice
Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2011-06-06T13:19:51Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 1 Pasienski_Matthew.pdf: 17424692 bytes, checksum: bd55e794d41bd87dbf146fd3dd4617ce (MD5)
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Ultracold Atoms in a Disordered Optical Lattice
… atoms and load condensates into a disordered 3D optical lattice, realizing the DBH model. Also as part of this work, the major technical components needed to implement a stroboscopic quantum simulation scheme were constructed and a number of calculations were performed.
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Strongly-interacting fermions in an optical lattice
… the pairing of fermionic lithium-6 pairs in an optical lattice within the strongly interacting BEC-BCS regime. Common to both sets of studies is the use of a magnetically tunable Feshbach resonance to manipulate interactions between the atoms. In the first experiment, we destabilize a sodium BEC …
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Ultracold quantum gases in three-dimensional optical lattice potentials
… condensate is loaded into a three-dimensional optical lattice potential formed by a standing wave laser light field. In this novel quantum system we have been able to both realize a quantum phase transition from a superfluid to a Mott insulator, and to observe the collapse and revival of a …
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Dynamics of ultracold bosons in a disordered optical lattice
… We use 87Rb atoms trapped in a disordered optical lattice to realize the 3D Bose Hubbard model, with independently, dynamically tunable lattice depth and disorder strength. The equilibrium behavior of the Bose Hubbard and disordered Bose Hubbard models are understood, but there are many …
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Studies of strongly-correlated fermions in an optical lattice
Ultracold fermionic atoms in a disordered optical lattice can realize the disordered Fermi-Hubbard model, allowing investigations of the nature of strongly-correlated fermions in a minimal setting. This thesis describes two such studies. In the first, we observe the momentum relaxation of …
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A next-generation apparatus for lithium optical lattice experiments
… model, using ultracold Lithium atoms in an optical lattice. A major goal of the quantum simulation program is to observe phase transitions of the Hubbard model, into Néel antiferromagnetic phases and d-wave superfluid phases. Phase transitions are generally accompanied by a change in an …
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Thermometry and cooling of ultracold atoms in an optical lattice
… the presence of a magnetic field gradient and an optical lattice. The presence of a magnetic field gradient separated the atoms into regions of opposite spin, with a boundary region of mixed spin in the center. In the presence of an optical lattice, the width of this region was found to be …
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Solar and Sterile Neutrino Physics with the Raghavan Optical Lattice
… use of a novel detector technology, the Raghavan Optical Lattice (ROL), in the Low-Energy Neutrino Spectrometer (LENS) and Neutrino Lattice (NuLat) experiments. LENS will measure the solar neutrino luminosity and the Sun's core metallicity using a ROL with indium-loaded liquid scintillator. NuLat …
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Operation and optical frequency comparisons with an ytterbium optical lattice clock
L'abstract è presente nell'allegato / the abstract is in the attachment
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Towards Rydberg-dressed 40K atoms in a three-dimensional optical lattice
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-04-12 without embargo terms
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Compressibility of a bosonic Mott-insulator in a disordered optical lattice
… ultracold 87Rb atoms moving in a disordered optical lattice. The ground-state phase diagram of the disordered Bose--Hubbard model at unit filling and zero-temperature is largely considered to be settled from a theory viewpoint, though studies at arbitrary densities are missing. Aside from the …
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Between order and disorder: ultracold atoms in a quasicrystalline optical lattice
… a solution to this problem, namely the use of optical lattices – standing waves of light. Optical lattices are free of impurities and therefore ideally suited to study quasicrystals, enabling unprecedented access to observables that are unattainable in condensed matter systems. This study …
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Quantum Simulation of Spin-1 Physics with Bosons in Optical Lattice
Mott insulators of ultracold atoms in optical lattices are widely used as an experimental platform for simulating and studying many-body physics. A topic at the frontier of quantum simulation with Mott insulators is the study of quantum spin models, which are intimately connected to other modern …
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Realizing quantum spin models with ⁷Li atoms in an optical lattice
… with the system of ultracold atoms in optical lattices provides a new perspective with the wide tunability of parameters and the minimal coupling to the environment. The mapping involves using the Mott insulating state of ultracold atoms in optical lattices, where the energy of a …
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Ultracold quantum gases in one-dimensional optical lattice potentials : nonlinear matter wave dynamics
… dynamics of matter waves in a onedimensional lattice potential. A 87Rb Bose-Einstein condensates is prepared in a one-dimensional waveguide in the lowest band of a superimposed optical lattice potential. The action of a weak lattice potential allows to modify the linear wave dispersion. We …
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High accuracy Yb optical lattice clock: frequency comparisons and contributions to International Atomic Time
L'abstract è presente nell'allegato / the abstract is in the attachment
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Few- and many-body physics of dipoles in ion traps and optical lattice simulators
… using trapped-ion quantum computers, and optical lattice simulators. In the first part of the thesis we describe the recent advances in Quantum Information Processing. In particular, we focus on the trapped-ion quantum computer. One of the main experimental roadblocks for this architecture …
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Characterization of a two-color magneto-optical trap for a spin-squeezed optical lattice clock
We experimentally realize a magneto-optical trap (MOT) for ytterbium that simultaneously scatters light from two atomic transitions, in order to reduce the minimum magnetic field gradient required for trapping atoms. From the experimental data, we propose a model of the MOT where one transition is …
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