[PDF] Cold Atoms In Cavity Qed For Quantum Information Processing eBook

Author : Martin J. A. Schütz
Publisher : Springer
Page : 214 pages
File Size : 46,73 MB
Release : 2016-11-15
Category : Computers
ISBN : 3319485598

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This thesis offers a comprehensive introduction to surface acoustic waves in the quantum regime. It addresses two of the most significant technological challenges in developing a scalable quantum information processor based on spins in quantum dots: (i) decoherence of the electronic spin qubit due to the surrounding nuclear spin bath, and (ii) long-range spin-spin coupling between remote qubits. Electron spins confined in quantum dots (QDs) are among the leading contenders for implementing quantum information processing. To this end, the author pursues novel strategies that turn the unavoidable coupling to the solid-state environment (in particular, nuclear spins and phonons) into a valuable asset rather than a liability.

Author :
Publisher : Elsevier
Page : 639 pages
File Size : 22,98 MB
Release : 2004-11-05
Category : Science
ISBN : 0080535429

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It has been recognised recently that the strange features of the quantum world could be used for new information transmission or processing functions such as quantum cryptography or, more ambitiously, quantum computing. These fascinating perspectives renewed the interest in fundamental quantum properties and lead to important theoretical advances, such as quantum algorithms and quantum error correction codes. On the experimental side, remarkable advances have been achieved in quantum optics, solid state physics or nuclear magnetic resonance. This book presents the lecture notes of the Les Houches Summer School on ‘Quantum entanglement and information processing’. Following the long tradition of the les Houches schools, it provides a comprehensive and pedagogical approach of the whole field, written by renowned specialists.One major goal of this book is to establish connections between the communities of quantum optics and of quantum electronic devices working in the area of quantum computing. When two communities share the same goals, the universality of physics unavoidably leads to similar developments. However, the communication barrier is often high, and few physicists are able to overcome it. This school has contributed to bridge the existing gap between communities, for the benefit of the future actors in the field of quantum computing. The book thus combines introductory chapters, providing the reader with a sufficiently wide theoretical framework in quantum information, quantum optics and quantum circuits physics, with more specialized presentations of recent theoretical and experimental advances in the field. This structure makes the book accessible to any graduate student having a good knowledge of basic quantum mechanics, and extremely useful to researchers. · Covers quantum optics, solid state physics and NMR implementations· Pedagogical approach combining introductory lectures and advanced chapters· Written by leading experts in the field· Accessible to all graduate students with a basic knowledge of quantum mechanics

Author :
Publisher :
Page : 17 pages
File Size : 16,33 MB
Release : 2005
Category :
ISBN :

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The goal of the program was to develop atom + cavity QED systems capable of storing and coherently manipulating quantum information coded in long-lived ground states of trapped atoms. We have developed atom traps designed to trap arrays of atoms inside high-finesse optical resonators. We have incorporated these atom traps into our high-finesse optical resonators and distilled the number of atoms in the traps down to the single atom level. Our implementation will enable coherent quantum information processing between atomic qubits readily scalable to>20 qubits. The theoretical effort of this program focused on two goals: (1) exploring alternative strategies for atomic and optical-based systems capable of storing and manipulating quantum information, and (2) supporting the experimental program by providing detailed study of the laboratory systems.

Author : Thomas Beth
Publisher : John Wiley & Sons
Page : 471 pages
File Size : 44,70 MB
Release : 2006-03-06
Category : Science
ISBN : 3527606084

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Quantum processing and communication is emerging as a challenging technique at the beginning of the new millennium. This is an up-to-date insight into the current research of quantum superposition, entanglement, and the quantum measurement process - the key ingredients of quantum information processing. The authors further address quantum protocols and algorithms. Complementary to similar programmes in other countries and at the European level, the German Research Foundation (DFG) realized a focused research program on quantum information. The contributions - written by leading experts - bring together the latest results in quantum information as well as addressing all the relevant questions.

Author : Serge Haroche
Publisher : OUP Oxford
Page : 616 pages
File Size : 33,52 MB
Release : 2006-08-11
Category : Science
ISBN : 0191523240

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The counter-intuitive aspects of quantum physics have been long illustrated by thought experiments, from Einstein's photon box to Schrödinger's cat. These experiments have now become real, with single particles - electrons, atoms, or photons - directly unveiling the strange features of the quantum. State superpositions, entanglement and complementarity define a novel quantum logic which can be harnessed for information processing, raising great hopes for applications. This book describes a class of such thought experiments made real. Juggling with atoms and photons confined in cavities, ions or cold atoms in traps, is here an incentive to shed a new light on the basic concepts of quantum physics. Measurement processes and decoherence at the quantum-classical boundary are highlighted. This volume, which combines theory and experiments, will be of interest to students in quantum physics, teachers seeking illustrations for their lectures and new problem sets, researchers in quantum optics and quantum information.

Author : Maciej Lewenstein
Publisher : OUP Oxford
Page : 494 pages
File Size : 48,6 MB
Release : 2012-03-08
Category : Science
ISBN : 0191627437

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Quantum computers, though not yet available on the market, will revolutionize the future of information processing. Quantum computers for special purposes like quantum simulators are already within reach. The physics of ultracold atoms, ions and molecules offer unprecedented possibilities of control of quantum many body systems and novel possibilities of applications to quantum information processing and quantum metrology. Particularly fascinating is the possibility of using ultracold atoms in lattices to simulate condensed matter or even high energy physics. This book provides a complete and comprehensive overview of ultracold lattice gases as quantum simulators. It opens up an interdisciplinary field involving atomic, molecular and optical physics, quantum optics, quantum information, condensed matter and high energy physics. The book includes some introductory chapters on basic concepts and methods, and then focuses on the physics of spinor, dipolar, disordered, and frustrated lattice gases. It reviews in detail the physics of artificial lattice gauge fields with ultracold gases. The last part of the book covers simulators of quantum computers. After a brief course in quantum information theory, the implementations of quantum computation with ultracold gases are discussed, as well as our current understanding of condensed matter from a quantum information perspective.