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Towards Studies of the Aubry-Andre Model with Ultracold Atoms in Optical Lattices
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| 자료유형 | 학위논문 |
|---|---|
| 서명/저자사항 | Towards Studies of the Aubry-Andre Model with Ultracold Atoms in Optical Lattices. |
| 개인저자 | Pazmino Velez, Arturo Gregorio. |
| 단체저자명 | State University of New York at Stony Brook. Physics. |
| 발행사항 | [S.l.]: State University of New York at Stony Brook., 2019. |
| 발행사항 | Ann Arbor: ProQuest Dissertations & Theses, 2019. |
| 형태사항 | 140 p. |
| 기본자료 저록 | Dissertations Abstracts International 81-05B. Dissertation Abstract International |
| ISBN | 9781392370209 |
| 학위논문주기 | Thesis (Ph.D.)--State University of New York at Stony Brook, 2019. |
| 일반주기 |
Source: Dissertations Abstracts International, Volume: 81-05, Section: B.
Advisor: Schneble, Dominik A. |
| 이용제한사항 | This item must not be sold to any third party vendors.This item must not be added to any third party search indexes. |
| 요약 | Atomic quantum gases in optical lattices allow for studies of ideal solid state-like systems with precisely controllable system parameters such as interactions, dimensionality and disorder. This thesis is devoted to the development of experimental capabilities, using ultracold rubidium-87 atoms in an optical lattice, to study transport and localization phenomena in one-dimensional lattice systems with weak and vanishing interactions. The first development is the design and implementation of a single-frequency diode laser system at 776 nm suitable for the creation of blue-detuned lattice tubes without residual axial confinement. The general suitability of the laser system for lattice experiments is demonstrated by implementing and studying a superfluid-to-Mott insulator transition. The second development concerns the control of the scattering length for rubidium-87 atoms through a narrow Feshbach resonance at 1007 G. For this purpose, a large portion of the magnetic field system of our apparatus was re-designed, including the coil assembly for magnetic trapping, its high-current switch configuration, and a precise magnetic field stabilization. The capabilities of the new system, in which the current of individual coils can be inverted, are demonstrated by accessing the Feshbach resonance through atom losses, with results that reproduce the state of the art in the field. Moreover, in quadrupole configuration, the new system allows for significant speedup of evaporative cooling.Based on these technical developments, we discuss the feasibility of experiments with incommensurate optical lattices that address properties of a mobility edge in the Aubry-Andre model, as well as of a method for stabilizing Bloch oscillations through a periodic modulation of interactions. |
| 일반주제명 | Physics. |
| 언어 | 영어 |
| 바로가기 | 
: 이 자료의 원문은 한국교육학술정보원에서 제공합니다. |
