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Construction Of Apparatus And First Experiments Investigating Dynamics Of Bose Einstein Condensates In Disordered Optical Lattices
Download Construction Of Apparatus And First Experiments Investigating Dynamics Of Bose Einstein Condensates In Disordered Optical Lattices full books in PDF, epub, and Kindle. Read online Construction Of Apparatus And First Experiments Investigating Dynamics Of Bose Einstein Condensates In Disordered Optical Lattices ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Construction of Apparatus and First Experiments Investigating Dynamics of Bose-Einstein Condensates in Disordered Optical Lattices by : Emily E. Edwards
Download or read book Construction of Apparatus and First Experiments Investigating Dynamics of Bose-Einstein Condensates in Disordered Optical Lattices written by Emily E. Edwards and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experiments with Dispersion Engineered Bose-Einstein Condensates by : Christopher Richard Hamner
Download or read book Experiments with Dispersion Engineered Bose-Einstein Condensates written by Christopher Richard Hamner and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The experiments are conducted with an experimental apparatus built at WSU. To facilitate the studies of this thesis, a number of new tools have been installed in the setup, such as multi-dimensional optical lattices, precision magnetic field control, and a Raman laser system. Details of these technological advances will be described together with the scientific results that they have enabled.
Book Synopsis Localisation of Bose-Einstein Condensates in Optical Lattices by : Russell Campbell
Download or read book Localisation of Bose-Einstein Condensates in Optical Lattices written by Russell Campbell and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The properties of Bose-Einstein condensates can be studied and controlled effectively when trapped in optical lattices formed by two counter-propagating laser beams. The dynamics of Bose-Einstein condensates in optical lattices are well-described by a continuous model using the Gross-Pitaevskii equation in a modulated potential or, in the case of deep potentials, a discrete model using the Discrete Nonlinear Schrodinger equation. Spatially localised modes, known as lattice solitons in the continuous model, or discrete breathers in the discrete model, can occur and are the focus of this thesis. Theoretical and computational studies of these localised modes are investigated in three different situations. Firstly, a model of a Bose-Einstein condensate in a ring optical lattice with atomic dissipations applied at a stationary or at a moving location on the ring is presented in the continuous model. The localised dissipation is shown to generate and stabilise both stationary and traveling lattice solitons. The solutions generated include spatially stationary quasiperiodic lattice solitons and a family of traveling lattice solitons with two intensity peaks per potential well with no counterpart in the discrete case. Collisions between traveling and stationary lattice solitons as well as between two traveling lattice solitons display a dependence on the lattice depth. Then, collisions with a potential barrier of either travelling lattice solitons or travelling discrete breathers are investigated along with their dependence on the height of the barrier. Regions of complete reection or of partial reflection where the incoming soliton/breather is split in two, are observed and understood interms of the soliton properties. Partial trapping of the atoms in the barrier is observed for positive barrier heights due to the negative effective mass of the solitons/breathers. Finally, two coupled discrete nonlinear Schrodinger equations can describe the interaction and collisions of breathers in two-species Bose-Einstein condensates in deep optical lattices. This is done for two cases of experimental relevance: a mixture of two ytterbium isotopes and a mixture of Rubidium (87Rb) and Potassium(41K) atoms. Depending on their initial separation, interaction between stationary breathers of different species can lead to the formation of symbiotic localised structures or transform one of the breathers from a stationary one into a travelling one. Collisions between travelling and stationary discrete breathers composed of different species are separated in four distinct regimes ranging from totally elastic when the interspecies interaction is highly attractive to mutual destruction when the interaction is suffciently large and repulsive.
Book Synopsis Quantum Hydrodynamics in One- and Two-component Bose-Einstein Condensates by : JiaJia Chang
Download or read book Quantum Hydrodynamics in One- and Two-component Bose-Einstein Condensates written by JiaJia Chang and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Several prototypical experiments concerning quantum hydrodynamics are realized in this thesis using one and two-component Bose-Einstein condensates (BECs). The experiments are conducted with an experimental apparatus built at WSU that is capable of reliably producing 87Rb BECs and 40K degenerate Fermi gases (DFGs). The apparatus, which has undergone many modifications and upgrades since it was first built, will be described in detail. The upgrades include the addition of fermionic potassium atoms, installation of a fully electromagnetic Ioffe-Pritchard type trap with excellent optical access to the BEC, and the addition of an optical dipole trap (and optical lattices).
Book Synopsis Non-equilibrium Dynamics of a Bose-Einstein Condensate in an Optical Lattice by : Uttam Man Shrestha
Download or read book Non-equilibrium Dynamics of a Bose-Einstein Condensate in an Optical Lattice written by Uttam Man Shrestha and published by . This book was released on 2009 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Panayotis G. Kevrekidis Publisher :Springer Science & Business Media ISBN 13 :3540735917 Total Pages :398 pages Book Rating :4.5/5 (47 download)
Book Synopsis Emergent Nonlinear Phenomena in Bose-Einstein Condensates by : Panayotis G. Kevrekidis
Download or read book Emergent Nonlinear Phenomena in Bose-Einstein Condensates written by Panayotis G. Kevrekidis and published by Springer Science & Business Media. This book was released on 2007-12-29 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, written by experts in the fields of atomic physics and nonlinear science, covers the important developments in a special aspect of Bose-Einstein condensation, namely nonlinear phenomena in condensates. Topics covered include bright, dark, gap and multidimensional solitons; vortices; vortex lattices; optical lattices; multicomponent condensates; mathematical methods/rigorous results; and the beyond-the-mean-field approach.
Book Synopsis Bose-Einstein Condensation and Superfluidity by : Lev Petrovich Pitaevskiĭ
Download or read book Bose-Einstein Condensation and Superfluidity written by Lev Petrovich Pitaevskiĭ and published by Oxford University Press. This book was released on 2016 with total page 567 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultracold atomic gases is a rapidly developing field of physics that attracts many young researchers around the world. This book gives a comprehensive overview of exciting developments in Bose-Einstein condensation and superfluidity from a theoretical perspective and makes sense of key experiments with a special focus on ultracold atomic gases.
Book Synopsis Dynamics of Bose-Einstein Condensates in Optical Lattices by : Sarah McKinney
Download or read book Dynamics of Bose-Einstein Condensates in Optical Lattices written by Sarah McKinney and published by . This book was released on 2004 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bose-Einstein Condensation in Atomic Gases by : Società italiana di fisica
Download or read book Bose-Einstein Condensation in Atomic Gases written by Società italiana di fisica and published by IOS Press. This book was released on 1999 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although first proposed by Einstein in 1924, Bose-Einstein condensation (BEC) in a gas was not achieved until 1995 when, using a combination of laser cooling and trapping, and magnetic trapping and evaporation, it was first observed in rubidium and then in lithium and sodium, cooled down to extremely low temperatures. This book brought together many leaders in both theory and experiment on Bose-Einstein condensation in gases. Their lectures provided a detailed coverage of the experimental techniques for the creation and study of BEC, as well as the theoretical foundation for understanding the properties of this novel system. This volume provides the first systematic review of the field and the many developments that have taken place in the past three years.
Book Synopsis A Versatile Setup for Experiments with Rubidium Bose Einstein Condensates: From Optical Lattices to Rydberg Matter by : Robert Löw
Download or read book A Versatile Setup for Experiments with Rubidium Bose Einstein Condensates: From Optical Lattices to Rydberg Matter written by Robert Löw and published by . This book was released on 2007 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ultracold Atoms in a Disordered Optical Lattice by : Matthew Robert White
Download or read book Ultracold Atoms in a Disordered Optical Lattice written by Matthew Robert White and published by ProQuest. This book was released on 2009 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work, we describe the construction of an apparatus to create Bose-Einstein condensates of 87Rb 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.
Book Synopsis Dynamics of Bose-Einstein Condensates in Optical Lattices by : Karen Anna Clara Braun-Munzinger
Download or read book Dynamics of Bose-Einstein Condensates in Optical Lattices written by Karen Anna Clara Braun-Munzinger and published by . This book was released on 2004 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A New Apparatus for Experiments with Caesium Bose-Einstein Condensates by : Craig David Colquhoun
Download or read book A New Apparatus for Experiments with Caesium Bose-Einstein Condensates written by Craig David Colquhoun and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis reports on the design and construction of an experimental apparatus capable of generating Bose-Einstein condensates (BECs) of spin-polarised caesium-133 atoms. Caesium condensates offer excellent control over interatomic interactions due to the rich landscape of low-field magnetic Feshbach resonances, which enables the study of quantum gases in attractive and repulsive interaction regimes. An ultra-high vacuum system, laser systems and magnetic field coils were assembled to trap and cool the atoms from room temperature to temperatures on the order of 1 nK. Absorption imaging was implemented as a means to detect the number and density distribution of the atoms. Laser cooling and trapping methods are introduced, and the effects of each cooling stage on the gas are demonstrated. The final cooling stage, evaporative cooling, is presented by way of examining the gas after it has undergone each evaporation phase so we observe the onset of Bose-Einstein condensation. Evaporative cooling produces BECs containing on the order of 2×105 atoms, with a condensate fraction of 0.48. We demonstrate that the atom number can be fine-tuned by removal of the most thermal atoms in the trap. We also exhibit our ability to observe expanding condensates in a guiding beam for durations of up to 1 s, and our ability to cause the condensate to implode, by tuning interactions. Measuring the temperature of the gas in sub-nK regimes is currently a challenge when using traditional time-of-flight thermometry. Some modifications to the apparatus have been described, that would permit thermometry using dilute caesium atoms in a different spin state to probe the main gas.
Book Synopsis Quantum Dynamics of Bose-einstein Condensate in 1D Optical Lattice by : Wei Li
Download or read book Quantum Dynamics of Bose-einstein Condensate in 1D Optical Lattice written by Wei Li and published by . This book was released on 2007 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: The realization of Bose Einstein condensation in ultra-cold dilute atomic gases, represented by a macroscopic occupation of ground state and the non-vanishing order parameter, makes the study of quantum many-body physics and condensed matter physics much easier. Especially, the quantum dynamics of condensate in the optical lattice serves as a perfect test-bed to study the condensed matter physics such as Josephson tunneling, Bloch oscillations, Landau-Zener tunneling. The interplay of mean field interaction and coherent Josephson tunneling leads to rich phases described by the Bose-Hubbard model such as Superfluid-Insulator transition at zero temperature and Berezinskii-Kosterlitz thouless transition at finite temperature. Furthermore, due to the extremely narrow momentum distribution of Bose Einstein condensate, it can be used to make interferometer as sensitive phase detector. The creation of number squeezed state of BEC enables the realization of Heisenberg-limited interferometer which can bring the noise below shot-noise level. The coherence time of such squeezed state interferometer can be longer than that of the coherent state interferometers. The quasi-2D geometry in 1D optical lattice can be used to study superfluid to normal fluid transition when topological order is broken. The studies of Kosterlitz-Thouless with inter-well coupling can lead to the interpretation of High TC superconductivity. This work will discuss the quantum dynamics of the Bose-Einstein condensate in 1D optical lattice.
Book Synopsis Experiments with Bose-Einstein Condensates in Optical Lattices and Cold Collisions of Ultracold Atoms by : Angela Susan Mellish
Download or read book Experiments with Bose-Einstein Condensates in Optical Lattices and Cold Collisions of Ultracold Atoms written by Angela Susan Mellish and published by . This book was released on 2005 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: The experimental realisation of Bose-Einstein condensation in 1995 opened up a wealth of opportunities for probing quantum states of matter. The development of many tools used to manipulate such ultracold samples and the rapid progress on understanding these systems will ultimately lead to great technological advances. The work described in this thesis contributes to this worldwide effort and here we present experiments which investigate the properties and behaviour of ultracold atoms.
Book Synopsis Bose–Einstein Condensation in Dilute Gases by : C. J. Pethick
Download or read book Bose–Einstein Condensation in Dilute Gases written by C. J. Pethick and published by Cambridge University Press. This book was released on 2008-09-11 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since an atomic Bose-Einstein condensate, predicted by Einstein in 1925, was first produced in the laboratory in 1995, the study of ultracold Bose and Fermi gases has become one of the most active areas in contemporary physics. This book explains phenomena in ultracold gases from basic principles, without assuming a detailed knowledge of atomic, condensed matter, and nuclear physics. This new edition has been revised and updated, and includes new chapters on optical lattices, low dimensions, and strongly-interacting Fermi systems. This book provides a unified introduction to the physics of ultracold atomic Bose and Fermi gases for advanced undergraduate and graduate students, as well as experimentalists and theorists. Chapters cover the statistical physics of trapped gases, atomic properties, cooling and trapping atoms, interatomic interactions, structure of trapped condensates, collective modes, rotating condensates, superfluidity, interference phenomena, and trapped Fermi gases. Problems are included at the end of each chapter.
Book Synopsis Nonlinear Dynamics and Shock Structures in Elongated Bose-Einstein Condensates by : Maren Elizabeth Mossman
Download or read book Nonlinear Dynamics and Shock Structures in Elongated Bose-Einstein Condensates written by Maren Elizabeth Mossman and published by . This book was released on 2019 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dilute gas Bose-Einstein condensates are ultracold quantum gases that display many peculiar hydrodynamic properties, such as superfluidity, i.e. dissipation-less flow, a variety of solitonic textures and quantized vortex structures. Small amplitude excitations within a Bose-Einstein condensate are described by the Bogoliubov dispersion, and have been extensively studied in the past. This dissertation extends previous studies by focusing on strong, nonlinear excitations and shock structures generated in elongated Rb-87 Bose-Einstein condensates, elucidating novel dynamics in these quantum systems.This dissertation is separated into two major parts. In the first part, the building and characterization of a new Bose-Einstein condensate apparatus at Washington State University is described. This apparatus has been built to generate ultracold clouds of Rb-87 and, more recently, K-41atoms. A description of the setups for both isotopes are provided. The apparatus reliably produces Bose-Einstein condensates of 7 x 105 Rb-87 atoms every 20 seconds.In the second part of this dissertation, three experiments in a channel geometry are described that have been conducted with the new apparatus. In this part of the dissertation, quantum hydrodynamic properties are probed by using time-dependent optical potentials to generate nonlinear excitations and shock structures in an elongated Bose-Einstein condensate. An emergence of viscous-like shock dynamics, unidirectionality of a non-magnetic spin switch device, and the structure of dispersive shock waves in new types of higher order dispersions are observed. The work described in this dissertation establishes a novel platform for studying strong nonlinear effects in ultracold quantum gases.
