Theoretical Study Of Bose Einstein Condensate Based Atom Michelson Interferometers PDF Download
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Author | : Rudra Prasad Kafle |
Publisher | : |
Total Pages | : 490 |
Release | : 2012 |
Genre | : |
ISBN | : |
Download Theoretical Study of Bose-Einstein Condensate-Based Atom Michelson Interferometers Book in PDF, ePub and Kindle
Abstract: Atom interferometers and gyroscopes are highly sensitive atom-optical devices which are capable to measure inertial, gravitational, electric, and magnetic fields and to sense rotations. Theoretically, the signal-to-noise ratio of atomic gyroscopes is about a hundred billion times more than that of their optical counterparts for the same particle flux and the enclosed area. Ultra cold atoms from a Bose-Einstein condensate (BEC) can easily be controlled and coherently manipulated on small chips by laser pulses. Atom-optical devices will therefore play a significant role in fundamental research, precision measurements, and navigation systems. In BEC-based atom interferometers, a BEC in a trap is split by using laser pulses, the split clouds are allowed to evolve, they are reflected, and then recombined by laser pulses to observe interference. The split clouds accumulate spatial phase because of the trap and the nonlinearity caused by atom-atom interactions. A velocity mismatch due to reflection laser pulses also introduces a phase gradient across each cloud. These factors contribute to spatial relative phase between the clouds at recombination, causing the loss of contrast of the interference fringes. The main objective of this dissertation is to study the dynamics of a split condensate in atom Michelson interferometers, investigate the effect of trap frequencies, nonlinearity, and the velocity mismatch on the contrast, and to obtain the best theoretical limit of performance in terms of the experimental parameters: trap frequencies, number of atoms, and the velocity imparted to the clouds by the splitting laser pulses.
Author | : |
Publisher | : |
Total Pages | : 440 |
Release | : 2008 |
Genre | : Bose-Einstein condensation |
ISBN | : |
Download A Theoretical Analysis of Bose-Einstein Condensate Based Beamsplitters, Interferometers, and Transistors Book in PDF, ePub and Kindle
Abstract: Over the last several years considerable efforts have been made to develop Bose-Einstein condensate (BEC) based devices for a number of applications including fundamental research, precision measurements, and navgation systems. These devices, capable of complex functionality, can be built from simpler components which is currently done in both optics and microelectronics. These components include cold atom equivalents of beamsplitters, mirrors, waveguides, diodes, and transistors. The operation of the individual components must be fully understood before they can be assembled into a more complex device. The primary goal of this dissertation is to present a theoretical analysis of these components. It begins with a theoretical analysis of several different types of cold-atom beamsplitters in the context of BEC interferometry. Next, the dynamics of an interferometer that uses optical pulses to control the dynamics of the BEC will be presented. Finally, a proposal for a BEC based component that has behavior that is similar to an electronic transistor is introduced.
Author | : Tarik Berrada |
Publisher | : Springer |
Total Pages | : 244 |
Release | : 2015-12-17 |
Genre | : Science |
ISBN | : 3319272330 |
Download Interferometry with Interacting Bose-Einstein Condensates in a Double-Well Potential Book in PDF, ePub and Kindle
This thesis demonstrates a full Mach–Zehnder interferometer with interacting Bose–Einstein condensates confined on an atom chip. It relies on the coherent manipulation of atoms trapped in a magnetic double-well potential, for which the author developed a novel type of beam splitter. Particle-wave duality enables the construction of interferometers for matter waves, which complement optical interferometers in precision measurement devices, both for technological applications and fundamental tests. This requires the development of atom-optics analogues to beam splitters, phase shifters and recombiners. Particle interactions in the Bose–Einstein condensate lead to a nonlinearity, absent in photon optics. This is exploited to generate a non-classical state with reduced atom-number fluctuations inside the interferometer. This state is then used to study the interaction-induced dephasing of the quantum superposition. The resulting coherence times are found to be a factor of three longer than expected for coherent states, highlighting the potential of entanglement as a resource for quantum-enhanced metrology.
Author | : Nick P. Proukakis |
Publisher | : Cambridge University Press |
Total Pages | : 663 |
Release | : 2017-04-27 |
Genre | : Science |
ISBN | : 1108138624 |
Download Universal Themes of Bose-Einstein Condensation Book in PDF, ePub and Kindle
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 | : C. J. Pethick |
Publisher | : Cambridge University Press |
Total Pages | : 420 |
Release | : 2002 |
Genre | : Science |
ISBN | : 9780521665803 |
Download Bose-Einstein Condensation in Dilute Gases Book in PDF, ePub and Kindle
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Author | : Società italiana di fisica |
Publisher | : IOS Press |
Total Pages | : 664 |
Release | : 1999 |
Genre | : Science |
ISBN | : 1614992258 |
Download Bose-Einstein Condensation in Atomic Gases Book in PDF, ePub and Kindle
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.
Author | : Lev. P. Pitaevskii |
Publisher | : Oxford University Press |
Total Pages | : 392 |
Release | : 2003-04-03 |
Genre | : Science |
ISBN | : 9780198507192 |
Download Bose-Einstein Condensation Book in PDF, ePub and Kindle
Bose-Einstein Condensation represents a new state of matter and is one of the cornerstones of quantum physics, resulting in the 2001 Nobel Prize. Providing a useful introduction to one of the most exciting field of physics today, this text will be of interest to a growing community of physicists, and is easily accessible to non-specialists alike.
Author | : Anasuya Kundu |
Publisher | : LAP Lambert Academic Publishing |
Total Pages | : 116 |
Release | : 2010-09 |
Genre | : |
ISBN | : 9783838398570 |
Download Some Aspects of Bose Einstein Condensation Book in PDF, ePub and Kindle
Shorttitle: The first experimental achievement of Bose Einstein condensation (BEC) in dilute alkali gases in 1995 has developed a renewed interest both theoretical and experimental. Lot of work has already been done over the last decade to study the different aspects of this condensation, mainly based on mean-field theories, hyperspherical approaches and quantum Monte Carlo methods. This thesis work presents an approximate many-body approach to investigate mainly the static (ground state) properties of the condensate, incorporating realistic inter-atomic interactions. Potential harmonic expansion method (PHEM), which includes two-body correlations only and disregards three or higher body correlations, has been adopted to analyze this condensate. This is ideally suited for BEC, which is required to be extremely dilute for its experimental realization. This treatment and analysis should be useful for the physics community especially working with weakly interacting ultra cold atoms, bosons and fermions as well.
Author | : M. Inguscio |
Publisher | : IOS Press |
Total Pages | : 732 |
Release | : 1999 |
Genre | : Atomic gases |
ISBN | : 9780967335551 |
Download Condensazione Di Bose-Einstein Nei Gas Atomici Book in PDF, ePub and Kindle
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.
Author | : Stephen Choi |
Publisher | : |
Total Pages | : 294 |
Release | : 1999 |
Genre | : Bose-Einstein condensation |
ISBN | : |
Download A Theoretical Study on Manipulation of Trapped Atomic Bose-Einstein Condensates Book in PDF, ePub and Kindle