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Author : John P. Janis
Publisher :
ISBN 13 :
Total Pages : 360 pages
Book Rating : 4.:/5 (569 download)
Download or read book Building a Bose-Einstein Condensation Experiment in 87Rb written by John P. Janis and published by . This book was released on 2004 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jason Remington Ensher
Publisher :
ISBN 13 :
Total Pages : 484 pages
Book Rating : 4.:/5 (44 download)
Download or read book The First Experiments with Bose-Einstein Condensation of 87Rb written by Jason Remington Ensher and published by . This book was released on 1999 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mirco Siercke
Publisher :
ISBN 13 : 9780494777251
Total Pages : 244 pages
Book Rating : 4.7/5 (772 download)
Download or read book Realization of Bose-Einstein Condensation of Rubidium-87 in a Time-Orbiting Potential Trap written by Mirco Siercke and published by . This book was released on 2011 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: The construction of an apparatus capable of producing Bose-Einstein condensates marks a significant milestone in every experimental cold atom laboratory. In this thesis I describe the development of a system to create a Bose-Einstein condensate of 87RB in a Time-Orbiting Potential trap.I review the optical and magnetic techniques required to trap and cool an atomic sample under vacuum, motivating our decision to build a double MOT system comprised of a high-pressure (10-9 torr) chamber to gather atoms and a low-pressure (10-11 torr) chamber to cool atoms to degeneracy.By theoretically modeling the atom number and temperature inside the magnetic trap during evaporative cooling I demonstrate a simple approach to determining a cooling path that reaches the transition temperature. By making use of the condensates produced under these non-optimized conditions I determine the heating rate of the condensate in the TOP trap to be 300 nK/s. I further use the condensates to make a more precise measurement of the TOP trap bias field.I improve upon the conventional evaporation path used in TOP trap experiments by introducing and optimizing additional bias field compression stages in between RF evaporation ramps. I demonstrate how, by adding these additional stages, the system is capable of reaching the BEC phase transition with a final atom number of 2x 105. In contrast, RF evaporation after only a single bias field ramp has yielded condensates with only 30 x 103 atoms.
Author : Mirco Siercke
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (13 download)
Download or read book Realization of Bose-Einstein Condensation of 87Rb in a Time-orbiting Potential Trap written by Mirco Siercke and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download The Design and Construction of a Bose-Einstein Condensation Apparatus [microform] PDF Online Free](https://books.google.com/books/content/images/frontcover/pkINywAACAAJ?fife=w200-h370)
Author : Ana Jofre
Publisher : National Library of Canada = Bibliothèque nationale du Canada
ISBN 13 : 9780612918122
Total Pages : 366 pages
Book Rating : 4.9/5 (181 download)
Download or read book The Design and Construction of a Bose-Einstein Condensation Apparatus [microform] written by Ana Jofre and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 2004 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work describes the design and construction of the Bose-Einstein condensation (BEC) apparatus at the University of Toronto. The aim of the experiment is to create a Bose-Einstein condensate out of a vapour cloud of 87Rb atoms using a combination of laser cooling, magnetic trapping and evaporative cooling. The design and construction of all of the constituent parts necessary for the realization of these techniques are described in this work. The apparatus consists of two magneto-optical traps (MOTs, whereby the atoms are collected from a background vapour into the first MOT, and then transferred into the second MOT, which is in a region of ultra-high vacuum (
Author : Erik William Streed
Publisher :
ISBN 13 :
Total Pages : 130 pages
Book Rating : 4.:/5 (72 download)
Download or read book 87Rubidium Bose-Einstein Condensates written by Erik William Streed and published by . This book was released on 2006 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis details construction of a new apparatus for the production of 87Rb Bose-Einstein condensates and a subsequent quantum Zeno effect experiment. An experimental apparatus for producing large Bose-Einstein condensates of 87Rb is described in detail. A high flux thermal atomic beam is decelerated by a Zeeman slower and is then captured and cooled in a magneto-optical trap. The atoms are then transfered into a cloverleaf style Ioffe-Pritchard magnetic trap and cooled to quantum degeneracy with radio frequency induced forced evaporation. Condensates containing up to 20 million atoms can be produced every few minutes. The quantum Zeno effect is the suppression of transitions between quantum states by frequent measurement. Oscillation between two ground hyperfine states of a magnetically trapped 87Rb Bose-Einstein condensate, externally driven at a transition rate WR, was substantially suppressed by destructively measuring one of the levels with resonant optical scattering. While an ideal continuous measurement will stop the transition, any real measurement method will occur at a finite rate. The suppression of the transition rate in the two level system was quantified for pulsed measurements with a time between pulses t and weak continuous measurements with a scattering rate y. We observe that the weak continuous measurements exhibit the same suppression in the transition rate as the pulsed measurements when ySt = 3.60(0.43). This is in agreement with the previously predicted value of 4. Increasing the measurement frequency suppressed the transition rate to 0.005WR.
Author :
Publisher :
ISBN 13 :
Total Pages : 59 pages
Book Rating : 4.:/5 (938 download)
Download or read book Building an Experiment for Bose-Einstein Condensation written by and published by . This book was released on 2003 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Christopher John Myatt
Publisher :
ISBN 13 :
Total Pages : 454 pages
Book Rating : 4.:/5 (38 download)
Download or read book Bose-Einstein Condensation Experiments in a Dilute Vapor of Rubidium written by Christopher John Myatt and published by . This book was released on 1997 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James Michael Higbie
Publisher :
ISBN 13 :
Total Pages : 364 pages
Book Rating : 4.:/5 (35 download)
Download or read book First Steps Toward Precision Measurements Using Multicomponent Bose-Einstein Condensates of /+87\Rb written by James Michael Higbie and published by . This book was released on 2005 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jan Arlt
Publisher :
ISBN 13 :
Total Pages : 280 pages
Book Rating : 4.:/5 (471 download)
Download or read book Experiments on Bose-Einstein Condensation written by Jan Arlt and published by . This book was released on 2000 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Carl E. Wieman
Publisher : World Scientific
ISBN 13 : 9812704167
Total Pages : 827 pages
Book Rating : 4.8/5 (127 download)
Download or read book Collected Papers of Carl Wieman written by Carl E. Wieman and published by World Scientific. This book was released on 2008 with total page 827 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carl Wieman's contributions have had a major impact on defining the field of atomic physics as it exists today. His ground-breaking research has included precision laser spectroscopy; using lasers and atoms to provide important table-top tests of theories of elementary particle physics; the development of techniques to cool and trap atoms using laser light, particularly in inventing much simpler, less expensive ways to do this; the understanding of how atoms interact with one another and light at ultracold temperatures; and the creation of the first Bose-Einstein condensation in a dilute gas, and the study of the properties of this condensate. In recent years, he has also turned his attention to physics education and new methods and research in that area. This indispensable volume presents his collected papers, with annotations from the author, tracing his fascinating research path and providing valuable insight about the significance of the works.
Author : Mukunda Prasad Das
Publisher : World Scientific
ISBN 13 : 9814491985
Total Pages : 315 pages
Book Rating : 4.8/5 (144 download)
Download or read book Bose-einstein Condensation - From Atomic Physics To Quantum Fluids, Procs Of The 13th Physics Summer Sch written by Mukunda Prasad Das and published by World Scientific. This book was released on 2000-12-28 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bose-Einstein condensation of dilute gases is an exciting new field of interdisciplinary physics. The eight chapters in this volume introduce its theoretical and experimental foundations. The authors are lucid expositors who have also made outstanding contributions to the field. They include theorists Tony Leggett, Allan Griffin and Keith Burnett, and Nobel-Prize-winning experimentalist Bill Phillips. In addition to the introductory material, there are articles treating topics at the forefront of research, such as experimental quantum phase engineering of condensates, the “superchemistry” of interacting atomic and molecular condensates, and atom laser theory.
Author : C. J. Pethick
Publisher : Cambridge University Press
ISBN 13 : 1139811088
Total Pages : 538 pages
Book Rating : 4.1/5 (398 download)
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.
Author : Nick P. Proukakis
Publisher : Cambridge University Press
ISBN 13 : 1108138624
Total Pages : 663 pages
Book Rating : 4.1/5 (81 download)
Download or read book Universal Themes of Bose-Einstein Condensation written by Nick P. Proukakis and published by Cambridge University Press. This book was released on 2017-04-27 with total page 663 pages. Available in PDF, EPUB and Kindle. Book excerpt: Following an explosion of research on Bose–Einstein condensation (BEC) ignited by demonstration of the effect by 2001 Nobel prize winners Cornell, Wieman and Ketterle, this book surveys the field of BEC studies. Written by experts in the field, it focuses on Bose–Einstein condensation as a universal phenomenon, covering topics such as cold atoms, magnetic and optical condensates in solids, liquid helium and field theory. Summarising general theoretical concepts and the research to date - including novel experimental realisations in previously inaccessible systems and their theoretical interpretation - it is an excellent resource for researchers and students in theoretical and experimental physics who wish to learn of the general themes of BEC in different subfields.
Author : Lev Pitaevskii
Publisher : Oxford University Press
ISBN 13 : 0191076686
Total Pages : 567 pages
Book Rating : 4.1/5 (91 download)
Download or read book Bose-Einstein Condensation and Superfluidity written by Lev Pitaevskii and published by Oxford University Press. This book was released on 2016-01-21 with total page 567 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultracold atomic gases is a rapidly developing area of physics that attracts many young researchers around the world. Written by world renowned experts in the field, this book gives a comprehensive overview of exciting developments in Bose-Einstein condensation and superfluidity from a theoretical perspective. The authors also make sense of key experiments from the past twenty years with a special focus on the physics of ultracold atomic gases. These systems are characterized by a rich variety of features which make them similar to other important systems of condensed matter physics (like superconductors and superfluids). At the same time they exhibit very peculiar properties which are the result of their gaseous nature, the possibility of trapping in a variety of low dimensional and periodical configurations, and of manipulating the two-body interaction. The book presents a systematic theoretical description based on the most successful many-body approaches applied both to bosons and fermions, at equilibrium and out of equilibrium, at zero as well as at finite temperature. Both theorists and experimentalists will benefit from the book, which is mainly addressed to beginners in the field (master students, PhD students, young postdocs), but also to more experienced researchers who can find in the book novel inspirations and motivations as well as new insightful connections. Building on the authors' first book, Bose-Einstein Condensation (Oxford University Press, 2003), this text offers a more systematic description of Fermi gases, quantum mixtures, low dimensional systems and dipolar gases. It also gives further emphasis on the peculiar phenomenon of superfluidity and its key role in many observable properties of these ultracold quantum gases.
Author : Yoav Sagi
Publisher : Springer Science & Business Media
ISBN 13 : 364229605X
Total Pages : 89 pages
Book Rating : 4.6/5 (422 download)
Download or read book Collisional Narrowing and Dynamical Decoupling in a Dense Ensemble of Cold Atoms written by Yoav Sagi and published by Springer Science & Business Media. This book was released on 2012-05-23 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultra-cold atomic ensembles have emerged in recent years as a powerful tool in many-body physics research, quantum information science and metrology. This thesis presents an experimental and theoretical study of the coherent properties of trapped atomic ensembles at high densities, which are essential to many of the aforementioned applications. The study focuses on how inter-particle interactions modify the ensemble coherence dynamics, and whether it is possible to extend the coherence time by means of external control. The thesis presents a theoretical model which explains the effect of elastic collision of the coherence dynamics and then reports on experiments which test this model successfully in the lab. Furthermore, the work includes the first implementation of dynamical decoupling with ultra-cold atomic ensembles. It is demonstrated experimentally that by using dynamical decoupling the coherence time can be extended 20-fold. This has a great potential to increase the usefulness of these ensembles for quantum computation.
Author :
Publisher :
ISBN 13 :
Total Pages : 924 pages
Book Rating : 4.F/5 ( download)
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2007 with total page 924 pages. Available in PDF, EPUB and Kindle. Book excerpt:
