Spin Squeezing And Non Linear Atom Interferometry With Bose Einstein Condensates
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Spin Squeezing And Non Linear Atom Interferometry With Bose Einstein Condensates
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Author : Christian Groß
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-01-12
Spin Squeezing And Non Linear Atom Interferometry With Bose Einstein Condensates written by Christian Groß and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-01-12 with Science categories.
Interferometry, the most precise measurement technique known today, exploits the wave-like nature of the atoms or photons in the interferometer. As expected from the laws of quantum mechanics, the granular, particle-like features of the individually independent atoms or photons are responsible for the precision limit, the shot noise limit. However this “classical” bound is not fundamental and it is the aim of quantum metrology to overcome it by employing entanglement among the particles. This work reports on the realization of spin-squeezed states suitable for atom interferometry. Spin squeezing was generated on the basis of motional and spin degrees of freedom, whereby the latter allowed the implementation of a full interferometer with quantum-enhanced precision.
Interferometry With Interacting Bose Einstein Condensates In A Double Well Potential
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Author : Tarik Berrada
language : en
Publisher: Springer
Release Date : 2015-12-17
Interferometry With Interacting Bose Einstein Condensates In A Double Well Potential written by Tarik Berrada and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-12-17 with Science categories.
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.
Atom Interferometry
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Author : G.M. Tino
language : en
Publisher: IOS Press
Release Date : 2014-10-16
Atom Interferometry written by G.M. Tino and has been published by IOS Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-10-16 with Science categories.
Since atom interferometers were first realized about 20 years ago, atom interferometry has had many applications in basic and applied science, and has been used to measure gravity acceleration, rotations and fundamental physical quantities with unprecedented precision. Future applications range from tests of general relativity to the development of next-generation inertial navigation systems. This book presents the lectures and notes from the Enrico Fermi school "Atom Interferometry", held in Varenna, Italy, in July 2013. The aim of the school was to cover basic experimental and theoretical aspects and to provide an updated review of current activities in the field as well as main achievements, open issues and future prospects. Topics covered include theoretical background and experimental schemes for atom interferometry; ultracold atoms and atom optics; comparison of atom, light, electron and neutron interferometers and their applications; high precision measurements with atom interferometry and their application to tests of fundamental physics, gravitation, inertial measurements and geophysics; measurement of fundamental constants; interferometry with quantum degenerate gases; matter wave interferometry beyond classical limits; large area interferometers; atom interferometry on chips; and interferometry with molecules. The book will be a valuable source of reference for students, newcomers and experts in the field of atom interferometry.
Quantum Enhanced Sensing Based On Time Reversal Of Entangling Interactions
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Author : Daniel Linnemann
language : en
Publisher: Springer
Release Date : 2018-07-28
Quantum Enhanced Sensing Based On Time Reversal Of Entangling Interactions written by Daniel Linnemann and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-07-28 with Science categories.
Quantum mechanics entails effects like superpositions and entanglement, which have no classical counterparts. From a technological standpoint these counterintuitive quantum aspects can be viewed as an unexploited resource that can be harnessed to support various tasks, e.g. in the domains of computation, communication, and metrology. In many applications, however, the potential of nonclassical states cannot practically be exploited due to detection inefficiencies. The authors address this limitation by experimentally realizing a novel detection scheme in which entangling interactions are time reversed. In this way, nonclassical many-particle states are disentangled, allowing them to be detected in a robust and technically feasible manner. In the context of quantum metrology, these nonlinear readout techniques extend the class of entangled probe states that can be leveraged for sensing applications without being limited by finite detector resolution. The authors present an active atom interferometer, where both the entangled state preparation and disentangling readout involve parametric amplification. This “SU(1,1)” interferometer is implemented with the help of spinor Bose–Einstein condensates, where amplification is implemented by atomic collisions leading to spin exchange.
Modern Challenges In Quantum Optics
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Author : Miguel Orszag
language : en
Publisher: Springer
Release Date : 2008-01-11
Modern Challenges In Quantum Optics written by Miguel Orszag and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-01-11 with Science categories.
Quantum Optics is a rapidly progressing field well suited to probe the many fundamental issues raised by the subtleties of quantum physics. This book consists of a collection of reviews and papers that highlight the most important challenges faced in this area of research, including topics such as cavity QED, quantum entanglement, decoherence, matter waves and nonlinear optics. It will be a source of reference for all those who wish to familiarize themselves with the latest developments in the field.
Progress In Optics
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Author : Taco Visser
language : en
Publisher: Academic Press
Release Date : 2022-04-06
Progress In Optics written by Taco Visser and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-04-06 with Science categories.
Progress in Optics, Volume 67, highlights new advances, with this updated volume presenting interesting chapters on a variety of timely topics in the field. Each chapter is written by an international board of authors. The book contains five reviews of the latest developments in optics. - Covers medical imaging, physical optics, integrated optics, and quantum optics - Includes contributions from leading authorities in the field of optics - Presents timely, state-of-the-art reviews on advances in optics
Science
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Author : John Michels (Journalist)
language : en
Publisher:
Release Date : 2011
Science written by John Michels (Journalist) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Science categories.
Many Particle Entanglement Einstein Podolsky Rosen Steering And Bell Correlations In Bose Einstein Condensates
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Author : Matteo Fadel
language : en
Publisher: Springer Nature
Release Date : 2021-10-04
Many Particle Entanglement Einstein Podolsky Rosen Steering And Bell Correlations In Bose Einstein Condensates written by Matteo Fadel and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-10-04 with Science categories.
This book presents theoretical methods and experimental results on the study of multipartite quantum correlations in spin-squeezed Bose–Einstein condensates. Nonclassical correlations in many-body systems are particularly interesting for both fundamental research and practical applications. For their investigation, ultracold atomic ensembles offer an ideal platform, due to their high controllability and long coherence times. In particular, we introduce criteria for detecting and characterizing multipartite entanglement, Einstein–Podolsky–Rosen steering, and Bell correlations. Moreover, we present the experimental observation of such correlations in systems of about 600 atoms.
Quantum Gases
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Author : Nick Proukakis
language : en
Publisher: World Scientific
Release Date : 2013
Quantum Gases written by Nick Proukakis and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Science categories.
This volume provides a broad overview of the principal theoretical techniques applied to non-equilibrium and finite temperature quantum gases. Covering Bose-Einstein condensates, degenerate Fermi gases, and the more recently realised exciton-polariton condensates, it fills a gap by linking between different methods with origins in condensed matter physics, quantum field theory, quantum optics, atomic physics, and statistical mechanics.
Chemical Abstracts
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Author :
language : en
Publisher:
Release Date : 2002
Chemical Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Chemistry categories.