Intrication de deux atomes en utilisant le blocage de Rydberg

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Publisher :
ISBN 13 :
Total Pages : 172 pages
Book Rating : 4.:/5 (69 download)

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Book Synopsis Intrication de deux atomes en utilisant le blocage de Rydberg by : Alpha Gaëtan

Download or read book Intrication de deux atomes en utilisant le blocage de Rydberg written by Alpha Gaëtan and published by . This book was released on 2009 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Considérons un système quantique constitué de deux sous-systèmes: on dit qu'il est dans un état intriqué s'il existe des corrélations quantiques entre les états de ces derniers. La compréhension et la mise en œuvre d'états intriqués ont de nombreuses applications (métrologie quantique, étude des systèmes fortement corrélés, traitement quantique de l’information, etc.) et constituent le contexte général de ce travail de thèse. Plus en détail, nous démontrons la réalisation d'un état intriqué de deux atomes neutres piégés indépendamment. Pour cela, nous exploitons le phénomène de blocage de Rydberg : lorsqu’on essaie d’exciter simultanément deux atomes séparés de quelques micromètres vers un état de Rydberg donné, la forte interaction entre atomes de Rydberg peut empêcher cette excitation simultanée. Dans ce cas, seul un des deux atomes est excité et l'on génère ainsi des corrélations quantiques entre les états des deux atomes, c'est-à-dire de l'intrication. Dans notre expérience deux atomes de rubidium 87 dans l'état fondamental 5S1/2 sont piégés chacun dans une pince optique microscopique, à une distance relative de 4 micromètres. En réalisant des transitions entre l’état 5S1/2 et l'état de Rydberg 58D3/2 par des transitions à deux photons, nous obtenons un état intriqué des deux atomes dans les sous-niveaux 5S1/2 , F=1,mF=1 et 5S1/2 , F=2,mF=2. Afin de quantifier l’intrication, nous mesurons la fidélité par rapport à l'état-cible en réalisant des transitions Raman entre ces deux sous-niveaux. La fidélité des paires d'atomes présentes à la fin de l'expérience est supérieure à la valeur seuil de 0,5, ce qui prouve la création d'un état intriqué.

Quantum Mechanics, Volume 3

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Publisher : John Wiley & Sons
ISBN 13 : 3527345558
Total Pages : 790 pages
Book Rating : 4.5/5 (273 download)

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Book Synopsis Quantum Mechanics, Volume 3 by : Claude Cohen-Tannoudji

Download or read book Quantum Mechanics, Volume 3 written by Claude Cohen-Tannoudji and published by John Wiley & Sons. This book was released on 2019-12-16 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new, third volume of Cohen-Tannoudji's groundbreaking textbook covers advanced topics of quantum mechanics such as uncorrelated and correlated identical particles, the quantum theory of the electromagnetic field, absorption, emission and scattering of photons by atoms, and quantum entanglement. Written in a didactically unrivalled manner, the textbook explains the fundamental concepts in seven chapters which are elaborated in accompanying complements that provide more detailed discussions, examples and applications. * Completing the success story: the third and final volume of the quantum mechanics textbook written by 1997 Nobel laureate Claude Cohen-Tannoudji and his colleagues Bernard Diu and Franck Laloë * As easily comprehensible as possible: all steps of the physical background and its mathematical representation are spelled out explicitly * Comprehensive: in addition to the fundamentals themselves, the books comes with a wealth of elaborately explained examples and applications Claude Cohen-Tannoudji was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris where he also studied and received his PhD in 1962. In 1973 he became Professor of atomic and molecular physics at the Collège des France. His main research interests were optical pumping, quantum optics and atom-photon interactions. In 1997, Claude Cohen-Tannoudji, together with Steven Chu and William D. Phillips, was awarded the Nobel Prize in Physics for his research on laser cooling and trapping of neutral atoms. Bernard Diu was Professor at the Denis Diderot University (Paris VII). He was engaged in research at the Laboratory of Theoretical Physics and High Energy where his focus was on strong interactions physics and statistical mechanics. Franck Laloë was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris. His first assignment was with the University of Paris VI before he was appointed to the CNRS, the French National Research Center. His research was focused on optical pumping, statistical mechanics of quantum gases, musical acoustics and the foundations of quantum mechanics.

Research Anthology on Advancements in Quantum Technology

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Publisher : Engineering Science Reference
ISBN 13 : 9781799885931
Total Pages : 550 pages
Book Rating : 4.8/5 (859 download)

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Book Synopsis Research Anthology on Advancements in Quantum Technology by : Information Resources Management Association

Download or read book Research Anthology on Advancements in Quantum Technology written by Information Resources Management Association and published by Engineering Science Reference. This book was released on 2021 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: "One-volume reference collection of reprinted IGI Global book chapters and journal articles"--Preface.

Quantum Computer Systems

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Publisher : Springer Nature
ISBN 13 : 303101765X
Total Pages : 203 pages
Book Rating : 4.0/5 (31 download)

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Book Synopsis Quantum Computer Systems by : Yongshan Ding

Download or read book Quantum Computer Systems written by Yongshan Ding and published by Springer Nature. This book was released on 2022-05-31 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book targets computer scientists and engineers who are familiar with concepts in classical computer systems but are curious to learn the general architecture of quantum computing systems. It gives a concise presentation of this new paradigm of computing from a computer systems' point of view without assuming any background in quantum mechanics. As such, it is divided into two parts. The first part of the book provides a gentle overview on the fundamental principles of the quantum theory and their implications for computing. The second part is devoted to state-of-the-art research in designing practical quantum programs, building a scalable software systems stack, and controlling quantum hardware components. Most chapters end with a summary and an outlook for future directions. This book celebrates the remarkable progress that scientists across disciplines have made in the past decades and reveals what roles computer scientists and engineers can play to enable practical-scale quantum computing.

Quantum Computing:An Environment for Intelligent Large Scale Real Application

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Publisher : Springer
ISBN 13 : 3319636391
Total Pages : 502 pages
Book Rating : 4.3/5 (196 download)

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Book Synopsis Quantum Computing:An Environment for Intelligent Large Scale Real Application by : Aboul Ella Hassanien

Download or read book Quantum Computing:An Environment for Intelligent Large Scale Real Application written by Aboul Ella Hassanien and published by Springer. This book was released on 2017-10-13 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights practical quantum key distribution systems and research on the implementations of next-generation quantum communication, as well as photonic quantum device technologies. It discusses how the advances in quantum computing and quantum physics have allowed the building, launching and deploying of space exploration systems that are capable of more and more as they become smaller and lighter. It also presents theoretical and experimental research on the potential and limitations of secure communication and computation with quantum devices, and explores how security can be preserved in the presence of a quantum computer, and how to achieve long-distance quantum communication. The development of a real quantum computer is still in the early stages, but a number of research groups have investigated the theoretical possibilities of such computers.

Quantum Foundations, Probability and Information

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Publisher : Springer
ISBN 13 : 3319749714
Total Pages : 304 pages
Book Rating : 4.3/5 (197 download)

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Book Synopsis Quantum Foundations, Probability and Information by : Andrei Khrennikov

Download or read book Quantum Foundations, Probability and Information written by Andrei Khrennikov and published by Springer. This book was released on 2018-06-13 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Composed of contributions from leading experts in quantum foundations, this volume presents viewpoints on a number of complex problems through informational, probabilistic, and mathematical perspectives and features novel mathematical models of quantum and subquantum phenomena. Rich with multi-disciplinary mathematical content, this book includes applications of partial differential equations in quantum field theory, differential geometry, oscillatory processes and vibrations, and Feynman integrals for quickly growing potential functions. Due to rapid growth in the field in recent years, this volume aims to promote interdisciplinary collaboration in the areas of quantum probability, information, communication and foundation, and mathematical physics. Many papers discuss complex yet novel problems that depart from the mainstream of quantum physical studies. Others devote explanation to fundamental problems of the conventional quantum theory, including its mathematical formalism. Overall, authors cover a diverse set of topics, including quantum and classical field theory and oscillatory processing, quantum mechanics from a Darwinian evolutionary perspective, and biological applications of quantum theory. Together in one volume, these essays will be useful to experts in the corresponding areas of quantum theory. Theoreticians, experimenters, mathematicians, and even philosophers in quantum physics and quantum probability and information theory can consider this book a valuable resource.

Fast Gates and Mixed-Species Entanglement with Trapped Ions

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Publisher : Springer Nature
ISBN 13 : 3030402851
Total Pages : 161 pages
Book Rating : 4.0/5 (34 download)

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Book Synopsis Fast Gates and Mixed-Species Entanglement with Trapped Ions by : Vera M. Schäfer

Download or read book Fast Gates and Mixed-Species Entanglement with Trapped Ions written by Vera M. Schäfer and published by Springer Nature. This book was released on 2020-03-04 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum logic gates are the crucial information-processing operation of quantumcomputers. Two crucial performance metrics for logic gates are their precision andspeed. Quantum processors based on trapped ions have always been the touchstonefor gate precision, but have suffered from slow speed relative to other quantum logicplatforms such as solid state systems. This thesis shows that it is possible to acceleratethe logic "clock speed" from kHz to MHz speeds, whilst maintaining a precision of99.8%. This is almost as high as the world record for conventional trapped-ion gates,but more than 20 times faster. It also demonstrates entanglement generation in atime (480ns) shorter than the natural timescale of the ions' motion in the trap, whichstarts to probe an interesting new regime of ion trap physics. In separate experiments, some of the first "mixed-species" quantum logic gates areperformed, both between two different elements, and between different isotopes.The mixed-isotope gate is used to make the first test of the quantum-mechanical Bellinequality between two different species of isolated atoms.

The Amazing World of Quantum Computing

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Publisher : Springer Nature
ISBN 13 : 9811524718
Total Pages : 278 pages
Book Rating : 4.8/5 (115 download)

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Book Synopsis The Amazing World of Quantum Computing by : Rajendra K. Bera

Download or read book The Amazing World of Quantum Computing written by Rajendra K. Bera and published by Springer Nature. This book was released on 2020-03-14 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the application of quantum mechanics to computing. It explains the fundamental concepts of quantum mechanics and then goes on to discuss various elements of mathematics required for quantum computing. Quantum cryptography, waves and Fourier analysis, measuring quantum systems, comparison to classical mechanics, quantum gates, and important algorithms in quantum computing are among the topics covered. The book offers a valuable resource for graduate and senior undergraduate students in STEM (science, technology, engineering, and mathematics) fields with an interest in designing quantum algorithms. Readers are expected to have a firm grasp of linear algebra and some familiarity with Fourier analysis.

Supervised Learning with Quantum Computers

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Publisher : Springer
ISBN 13 : 3319964240
Total Pages : 293 pages
Book Rating : 4.3/5 (199 download)

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Book Synopsis Supervised Learning with Quantum Computers by : Maria Schuld

Download or read book Supervised Learning with Quantum Computers written by Maria Schuld and published by Springer. This book was released on 2018-08-30 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum machine learning investigates how quantum computers can be used for data-driven prediction and decision making. The books summarises and conceptualises ideas of this relatively young discipline for an audience of computer scientists and physicists from a graduate level upwards. It aims at providing a starting point for those new to the field, showcasing a toy example of a quantum machine learning algorithm and providing a detailed introduction of the two parent disciplines. For more advanced readers, the book discusses topics such as data encoding into quantum states, quantum algorithms and routines for inference and optimisation, as well as the construction and analysis of genuine ``quantum learning models''. A special focus lies on supervised learning, and applications for near-term quantum devices.

A Primer on Quantum Computing

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Publisher : Springer
ISBN 13 : 9783030190651
Total Pages : 109 pages
Book Rating : 4.1/5 (96 download)

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Book Synopsis A Primer on Quantum Computing by : Franklin de Lima Marquezino

Download or read book A Primer on Quantum Computing written by Franklin de Lima Marquezino and published by Springer. This book was released on 2019-08-04 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is about quantum computing and quantum algorithms. The book starts with a chapter introducing the basic rules of quantum mechanics and how they can be used to build quantum circuits and perform computations. Further, Grover's algorithm is presented for unstructured search discussing its consequences and applications. Next, important techniques are discussed such as Quantum Fourier Transform and quantum phase estimation. Finally, Shor's algorithm for integer factorization is explained. At last, quantum walks are explained in detail covering both the discrete and continuous time models,and applications of this techniques are described for the design and analyses of quantum algorithms.