Quantum Measurement and Control

  • Filename: quantum-measurement-and-control.
  • ISBN: 9780521804424
  • Release Date: 2010
  • Number of pages: 460
  • Author: Howard M. Wiseman
  • Publisher: Cambridge University Press



Modern quantum measurement for graduate students and researchers in quantum information, quantum metrology, quantum control and related fields.

Quantum Measurement

  • Filename: quantum-measurement.
  • ISBN: 0521484138
  • Release Date: 1995-05-25
  • Number of pages: 191
  • Author: Vladimir B. Braginsky
  • Publisher: Cambridge University Press



This book is an up-to-date introduction to the quantum theory of measurement. Although the main principles of the field were elaborated in the 1930s by Bohr, Schrödinger, Heisenberg, von Neuman, and Mandelstam, it was not until the 1980s that technology became sufficiently advanced to allow its application in real experiments. Quantum measurement is now central to many ultra-high technology developments, such as "squeezed light," single atom traps, and searches for gravitational radiation. It is also considered to have great promise for computer science and engineering, particularly for its applications in information processing and transfer. The book begins with a brief introduction to the relevant theory and goes on to discuss all aspects of the design of practical quantum measurement systems.

Quantum Measurements and Decoherence

  • Filename: quantum-measurements-and-decoherence.
  • ISBN: 9789401595667
  • Release Date: 2013-04-17
  • Number of pages: 231
  • Author: M. Mensky
  • Publisher: Springer Science & Business Media



Quantum measurement (Le., a measurement which is sufficiently precise for quantum effects to be essential) was always one of the most impor tant points in quantum mechanics because it most evidently revealed the difference between quantum and classical physics. Now quantum measure ment is again under active investigation, first of all because of the practical necessity of dealing with highly precise and complicated measurements. The nature of quantum measurement has become understood much bet ter during this new period of activity, the understanding being expressed by the concept of decoherence. This term means a physical process lead ing from a pure quantum state (wave function) of the system prior to the measurement to its state after the measurement which includes classical elements. More concretely, decoherence occurs as a result of the entangle ment of the measured system with its environment and results in the loss of phase relations between components of the wave function of the measured system. Decoherence is essentially nothing else than quantum measurement, but considered from the point of view of its physical mechanism and resolved in time. The present book is devoted to the two concepts of quantum measure ment and decoherence and to their interrelation, especially in the context of continuous quantum measurement.

Time s Arrows and Quantum Measurement

  • Filename: time-s-arrows-and-quantum-measurement.
  • ISBN: 0521567750
  • Release Date: 1997-07-31
  • Number of pages: 346
  • Author: Lawrence S. Schulman
  • Publisher: Cambridge University Press



An introduction to the arrow of time and a new, related, theory of quantum measurement.

Continuous Quantum Measurements and Path Integrals

  • Filename: continuous-quantum-measurements-and-path-integrals.
  • ISBN: 0750302283
  • Release Date: 1993-01-01
  • Number of pages: 188
  • Author: M.B Mensky
  • Publisher: CRC Press



Advances in technology are taking the accuracy of macroscopic as well as microscopic measurements close to the quantum limit, for example, in the attempts to detect gravitational waves. Interest in continuous quantum measurements has therefore grown considerably in recent years. Continuous Quantum Measurements and Path Integrals examines these measurements using Feynman path integrals. The path integral theory is developed to provide formulae for concrete physical effects. The main conclusion drawn from the theory is that an uncertainty principle exists for processes, in addition to the familiar one for states. This implies that a continuous measurement has an optimal accuracy-a balance between inefficient error and large quantum fluctuations (quantum noise). A well-known expert in the field, the author concentrates on the physical and conceptual side of the subject rather than the mathematical.

Quantum Measurement

  • Filename: quantum-measurement.
  • ISBN: 3319433873
  • Release Date: 2016-09-25
  • Number of pages: 542
  • Author: Paul Busch
  • Publisher: Springer



This is a book about the Hilbert space formulation of quantum mechanics and its measurement theory. It contains a synopsis of what became of the Mathematical Foundations of Quantum Mechanics since von Neumann’s classic treatise with this title. Fundamental non-classical features of quantum mechanics—indeterminacy and incompatibility of observables, unavoidable measurement disturbance, entanglement, nonlocality—are explicated and analysed using the tools of operational quantum theory. The book is divided into four parts: 1. Mathematics provides a systematic exposition of the Hilbert space and operator theoretic tools and relevant measure and integration theory leading to the Naimark and Stinespring dilation theorems; 2. Elements develops the basic concepts of quantum mechanics and measurement theory with a focus on the notion of approximate joint measurability; 3. Realisations offers in-depth studies of the fundamental observables of quantum mechanics and some of their measurement implementations; and 4. Foundations discusses a selection of foundational topics (quantum-classical contrast, Bell nonlocality, measurement limitations, measurement problem, operational axioms) from a measurement theoretic perspective. The book is addressed to physicists, mathematicians and philosophers of physics with an interest in the mathematical and conceptual foundations of quantum physics, specifically from the perspective of measurement theory.

Quantum Chaos Quantum Measurement

  • Filename: quantum-chaos-quantum-measurement.
  • ISBN: 9789401579797
  • Release Date: 2013-04-17
  • Number of pages: 332
  • Author: Predrag Cvitanovic
  • Publisher: Springer Science & Business Media



This volume contains the proceedings of the NATO Advanced Research Workshop on `Quantum Chaos -- Theory and Experiment', held at the Niels Bohr Institute, University of Copenhagen, from 28 May to 1 June 1991. The work brings together leading quantum chaos theorists and experimentalists and greatly improves our understanding of the physics of quantum systems whose classical limit is chaotic. Quantum chaos is a subject of considerable current interest in a variety of fields, in particular nuclear physics, chemistry, statistical mechanics, atomic physics, condensed matter physics and nonlinear dynamics. The volume contains lectures about the currently most active fronts of quantum chaos, such as scars, semiclassical methods, quantum diffusion, random matrix spectra, quantum chaos in atomic and nuclear physics, and possible implications of quantum chaos for the problem of quantum measurement. Part of the book -- The Physics of Quantum Measurements -- is dedicated to the memory of John Bell.

Decoherence and Quantum Measurements

  • Filename: decoherence-and-quantum-measurements.
  • ISBN: 9789814497633
  • Release Date: 1998-02-10
  • Number of pages: 240
  • Author: Mikio Namiki
  • Publisher: World Scientific



The quantum measurement problem is one of the most fascinating and challenging topics in physics both theoretically and experimentally. It involves deep questions and the use of very sophisticated and elegant techniques. After analyzing the fundamental principles of quantum mechanics and of the Copenhagen interpretation, this book reviews the most important approaches to the measurement problem and rigorously reformulates the “collapse of the wave function” by measurement, as a dephasing process quantitatively characterized by an order parameter (called the decoherence parameter), according to the many-Hilbert-space approach to the problem. The book deals not only with the measurement processes (including imperfect measurements) but also with related interference and mesoscopic phenomena — by means of general arguments — of solvable models and of numerical simulations. The quantum Zeno effect and the issue of irreversibility are also discussed. Contents:General and Historical SurveyElements of Quantum MechanicsCritical Review of Measurement TheoriesThe Many-Hilbert-Space TheorySolvable Detector ModelsNeutron InterferometryNumerical Simulations of Measurement ProcessesQuantum Zeno EffectQuantum Dephasing by Chaos Readership: Physicists interested in the foundations of quantum theory. keywords:Decoherence;Irreversibility;Quantum Zeno Effect;Quantum Measurements;Environment;Classical Properties;Mesoscopic Systems;Time Evolutions;Projection Postulate;Collapse of the Wave Function “… considerable background material is given, allowing the volume to serve general educational and reference purposes as well. I can recommend it to anyone wanting an orientation to quantum measurement theory and, in particular, wanting to focus on the Many Hilbert Space Theory.” Foundations of Physics “The book may be useful both for students and experts.” Zentralblatt MATH

Quantum Measurements in Optics

  • Filename: quantum-measurements-in-optics.
  • ISBN: 9781461533863
  • Release Date: 2012-12-06
  • Number of pages: 429
  • Author: Paolo Tombesi
  • Publisher: Springer Science & Business Media



The NATO Advanced Research Workshop on Quantum Measurements in Optics was held in Cortina d'Ampezzo, Italy, January 21-25, 1991. This workshop was attended by 70 participants from 16 different countries. The subjects discussed at this workshop concentrated on quantum measurements in optics made possible by the recent advances in the generation and detection of light with low quantum noise. These advances have occurred simultaneously with the development of atomic traps capable of trapping a single atom for a considerable period of time. The interaction of a single two level atom with the single mode of the electromagnetic field is now possible in high Q microcavities. A new field of cavity QED has developed studying the properties of Rydberg atoms in microwave cavities. At this meeting we heard the first report of an atomic interferometer where a single atom passing through the two slits exhibits wave like interference phenomena. This new field involving the transfer of momentum from photons to atoms has lead to new possibilities for quantum nondemolition measurements on an optical field. We heard suggestions for such measurements at this meeting. With the new light sources available the possibility of using low quantum noise light in optical communications becomes close to reality. The problem of the propagation of quantum light field in optical fibres was actively discussed at this meeting.

Uses of Quantum Measurements Conceptual theoretical Frameworks for Measurements and Collapse free Posterior Value Ascriptions

  • Filename: uses-of-quantum-measurements-conceptual-theoretical-frameworks-for-measurements-and-collapse-free-posterior-value-ascriptions.
  • ISBN: 9780542814938
  • Release Date: 2006
  • Number of pages: 187
  • Author:
  • Publisher: ProQuest



Finally, this approach to posterior value ascription yields very nice motivations for the modal interpretation of quantum mechanics.

Quantum Measurement

  • Filename: quantum-measurement.
  • ISBN: 9783319433899
  • Release Date: 2016-08-23
  • Number of pages: 542
  • Author: Paul Busch
  • Publisher: Springer



This is a book about the Hilbert space formulation of quantum mechanics and its measurement theory. It contains a synopsis of what became of the Mathematical Foundations of Quantum Mechanics since von Neumann’s classic treatise with this title. Fundamental non-classical features of quantum mechanics—indeterminacy and incompatibility of observables, unavoidable measurement disturbance, entanglement, nonlocality—are explicated and analysed using the tools of operational quantum theory. The book is divided into four parts: 1. Mathematics provides a systematic exposition of the Hilbert space and operator theoretic tools and relevant measure and integration theory leading to the Naimark and Stinespring dilation theorems; 2. Elements develops the basic concepts of quantum mechanics and measurement theory with a focus on the notion of approximate joint measurability; 3. Realisations offers in-depth studies of the fundamental observables of quantum mechanics and some of their measurement implementations; and 4. Foundations discusses a selection of foundational topics (quantum-classical contrast, Bell nonlocality, measurement limitations, measurement problem, operational axioms) from a measurement theoretic perspective. The book is addressed to physicists, mathematicians and philosophers of physics with an interest in the mathematical and conceptual foundations of quantum physics, specifically from the perspective of measurement theory.

A Quantum Measurement Approach to Tunnelling

  • Filename: a-quantum-measurement-approach-to-tunnelling.
  • ISBN: 9810212232
  • Release Date: 1993
  • Number of pages: 116
  • Author: D. K. Roy
  • Publisher: World Scientific



This book presents a new approach to analyze quantum mechanical tunnelling of particles across potential barriers. The conventional concepts of this phenomenon, which are based on a time-in-dependent or a time-dependent perturbation approach are inadequate in furnishing explanations to a number of effects, e.g. (i) the limit of resolution of a field emission macroscope (FEM), (ii) Esaki integral, representing the I-V characteristics of solid-state junctions, (iii) Josephson effect, (iv) tunnelling time, (v) tunnelling current density etc. The new analysis presented here not only provides adequate explanations to all the above mentioned effects but also furnishes an appropriate expression for the tunnelling current density which yields results closer to experimentally observed values.

DMCA - Contact