Measuring The Quantum State Of Light

Author : Ulf Leonhardt
Publisher : Cambridge University Press
ISBN 13 : 9780521497305
Total Pages : 236 pages
Book Rating : 4.02/5 ( download)

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Download or read book Measuring the Quantum State of Light written by Ulf Leonhardt and published by Cambridge University Press. This book was released on 1997-07-13 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Appendix A: Semiclassical approximation

Author : Rob Adamson
Publisher :
ISBN 13 : 9780494677353
Total Pages : 0 pages
Book Rating : 4.5X/5 ( download)

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Download or read book Characterization of Quantum States of Light written by Rob Adamson and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: I present a series of experimental and theoretical advances in the field of quantum state estimation. Techniques for measuring the quantum state of light that were originally developed for distinguishable photons fail when the particles are indistinguishable. I develop new methods for handling indistinguishability in quantum state estimation. The technique I present provides the first complete description of states of experimentally indistinguishable photons. It allows me to derive the number of parameters needed to describe an arbitrary state and to quantify distinguishability. I demonstrate its use by applying it to the measurement of the quantum polarization state of two and three-photon systems. State characterization is optimal when no redundant information is collected about the state of the system. I present the results of the first optimal characterization of the polarization state of a two-photon system. I show an improved estimation power over the previous state of the art. I also show how the optimal measurements lead to a new description of the quantum state in terms of a discrete Wigner function. It is often desirable to describe the quantum state of a system in terms of properties that are not themselves quantum-mechanical observables. This usually requires a full characterization of the state followed by a calculation of the properties from the parameters characterizing the state. I apply a technique that allows such properties to be determined directly, without a full characterization of the state. This allows one such property, the purity, to be determined in a single measurement, regardless of the size of the system, while the conventional method of determining purity requires a number of measurements that scales exponentially with the system size.

Author : Akira Furusawa
Publisher : Springer
ISBN 13 : 4431559604
Total Pages : 110 pages
Book Rating : 4.03/5 ( download)

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Download or read book Quantum States of Light written by Akira Furusawa and published by Springer. This book was released on 2015-12-10 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explains what quantum states of light look like. Of special interest, a single photon state is explained by using a wave picture, showing that it corresponds to the complementarity of a quantum. Also explained is how light waves are created by photons, again corresponding to the complementarity of a quantum. The author shows how an optical wave is created by superposition of a "vacuum" and a single photon as a typical example. Moreover, squeezed states of light are explained as "longitudinal" waves of light and Schrödinger's cat states as macroscopic superposition states.

Author : Rob Adamson
Publisher :
ISBN 13 : 9780494677353
Total Pages : 426 pages
Book Rating : 4.5X/5 ( download)

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Download or read book Characterization of Quantum States of Light written by Rob Adamson and published by . This book was released on 2009 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: I present a series of experimental and theoretical advances in the field of quantum state estimation. Techniques for measuring the quantum state of light that were originally developed for distinguishable photons fail when the particles are indistinguishable. I develop new methods for handling indistinguishability in quantum state estimation. The technique I present provides the first complete description of states of experimentally indistinguishable photons. It allows me to derive the number of parameters needed to describe an arbitrary state and to quantify distinguishability. I demonstrate its use by applying it to the measurement of the quantum polarization state of two and three-photon systems.State characterization is optimal when no redundant information is collected about the state of the system. I present the results of the first optimal characterization of the polarization state of a two-photon system. I show an improved estimation power over the previous state of the art. I also show how the optimal measurements lead to a new description of the quantum state in terms of a discrete Wigner function.It is often desirable to describe the quantum state of a system in terms of properties that are not themselves quantum-mechanical observables. This usually requires a full characterization of the state followed by a calculation of the properties from the parameters characterizing the state. I apply a technique that allows such properties to be determined directly, without a full characterization of the state. This allows one such property, the purity, to be determined in a single measurement, regardless of the size of the system, while the conventional method of determining purity requires a number of measurements that scales exponentially with the system size.

Author : Ulf Leonhardt
Publisher : Cambridge University Press
ISBN 13 : 1139643878
Total Pages : 291 pages
Book Rating : 4.70/5 ( download)

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Download or read book Essential Quantum Optics written by Ulf Leonhardt and published by Cambridge University Press. This book was released on 2010-02-18 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering some of the most exciting trends in quantum optics - quantum entanglement, teleportation, and levitation - this textbook is ideal for advanced undergraduate and graduate students. The book journeys through the vast field of quantum optics following a single theme: light in media. A wide range of subjects are covered, from the force of the quantum vacuum to astrophysics, from quantum measurements to black holes. Ideas are explained in detail and formulated so that students with little prior knowledge of the subject can follow them. Each chapter ends with several short questions followed by a more detailed homework problem, designed to test the reader and show how the ideas discussed can be applied. Solutions to homework problems are available at www.cambridge.org/9780521869782.

Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309102707
Total Pages : 245 pages
Book Rating : 4.04/5 ( download)

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Download or read book Controlling the Quantum World written by National Research Council and published by National Academies Press. This book was released on 2007-06-21 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: As part of the Physics 2010 decadal survey project, the Department of Energy and the National Science Foundation requested that the National Research Council assess the opportunities, over roughly the next decade, in atomic, molecular, and optical (AMO) science and technology. In particular, the National Research Council was asked to cover the state of AMO science, emphasizing recent accomplishments and identifying new and compelling scientific questions. Controlling the Quantum World, discusses both the roles and challenges for AMO science in instrumentation; scientific research near absolute zero; development of extremely intense x-ray and laser sources; exploration and control of molecular processes; photonics at the nanoscale level; and development of quantum information technology. This book also offers an assessment of and recommendations about critical issues concerning maintaining U.S. leadership in AMO science and technology.

Author : Timothy S. Woodworth
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.18/5 ( download)

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Download or read book Enhanced Measurement of Transmission with Quantum States of Light written by Timothy S. Woodworth and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author :
Publisher :
ISBN 13 :
Total Pages : 1138 pages
Book Rating : 4.90/5 ( download)

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Download or read book Progress in Quantum Electronics written by and published by . This book was released on 1985 with total page 1138 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Prem Kumar
Publisher : Springer Science & Business Media
ISBN 13 : 0306470977
Total Pages : 527 pages
Book Rating : 4.74/5 ( download)

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Download or read book Quantum Communication, Computing, and Measurement 2 written by Prem Kumar and published by Springer Science & Business Media. This book was released on 2007-05-08 with total page 527 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the Fourth International Conference on Quantum Communication, Measurement and Computing, this volume brings together scientists working in the interdisciplinary fields of quantum communication science and technology. Topics include quantum information theory, quantum computing, stochastic processes and filtering, and quantum measurement theory

Author : Hans-A. Bachor
Publisher : John Wiley & Sons
ISBN 13 : 3527411933
Total Pages : 588 pages
Book Rating : 4.31/5 ( download)

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Download or read book A Guide to Experiments in Quantum Optics written by Hans-A. Bachor and published by John Wiley & Sons. This book was released on 2019-10-28 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides fully updated coverage of new experiments in quantum optics This fully revised and expanded edition of a well-established textbook on experiments on quantum optics covers new concepts, results, procedures, and developments in state-of-the-art experiments. It starts with the basic building blocks and ideas of quantum optics, then moves on to detailed procedures and new techniques for each experiment. Focusing on metrology, communications, and quantum logic, this new edition also places more emphasis on single photon technology and hybrid detection. In addition, it offers end-of-chapter summaries and full problem sets throughout. Beginning with an introduction to the subject, A Guide to Experiments in Quantum Optics, 3rd Edition presents readers with chapters on classical models of light, photons, quantum models of light, as well as basic optical components. It goes on to give readers full coverage of lasers and amplifiers, and examines numerous photodetection techniques being used today. Other chapters examine quantum noise, squeezing experiments, the application of squeezed light, and fundamental tests of quantum mechanics. The book finishes with a section on quantum information before summarizing of the contents and offering an outlook on the future of the field. -Provides all new updates to the field of quantum optics, covering the building blocks, models and concepts, latest results, detailed procedures, and modern experiments -Places emphasis on three major goals: metrology, communications, and quantum logic -Presents fundamental tests of quantum mechanics (Schrodinger Kitten, multimode entanglement, photon systems as quantum emulators), and introduces the density function -Includes new trends and technologies in quantum optics and photodetection, new results in sensing and metrology, and more coverage of quantum gates and logic, cluster states, waveguides for multimodes, discord and other quantum measures, and quantum control -Offers end of chapter summaries and problem sets as new features A Guide to Experiments in Quantum Optics, 3rd Edition is an ideal book for professionals, and graduate and upper level students in physics and engineering science.