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e-Book Quantum Measurements and Decoherence: Models and Phenomenology (Fundamental Theories of Physics) download

e-Book Quantum Measurements and Decoherence: Models and Phenomenology (Fundamental Theories of Physics) download

by M. Mensky

ISBN: 9048154227
ISBN13: 978-9048154227
Language: English
Publisher: Springer; Softcover reprint of hardcover 1st ed. 2000 edition (December 9, 2010)
Pages: 231
Category: Mathematics
Subategory: Math Science

ePub size: 1513 kb
Fb2 size: 1562 kb
DJVU size: 1508 kb
Rating: 4.9
Votes: 222
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Decoherence is essentially nothing else than quantum measurement, but considered .

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.

Электронная книга "Quantum Measurements and Decoherence: Models and Phenomenology", M. Mensky. Эту книгу можно прочитать в Google Play Книгах на компьютере, а также на устройствах Android и iOS. Выделяйте текст, добавляйте закладки и делайте заметки, скачав книгу "Quantum Measurements and Decoherence: Models and Phenomenology" для чтения в офлайн-режиме.

Models and Phenomenology. Quantum measurement (L. 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.

Quantum Measurements And Decoherence book. Start by marking Quantum Measurements And Decoherence: Models And Phenomenology (Fundamental Theories Of Physics) as Want to Read: Want to Read savin. ant to Read.

This book is devoted to the theory of quantum measurements, an area that recently has attracted much attention because of its new applications for quantum information technology

This book is devoted to the theory of quantum measurements, an area that recently has attracted much attention because of its new applications for quantum information technology. The phenomenon of decoherence of a measured system is investigated and simple techniques for the description of a wide class of measurements are developed. An individual continuously measured (dec This book is devoted to the theory of quantum measurements, an area that recently has attracted much attention because of its new applications for quantum information technology.

models to phenomenology. Foundations of Physics 27, 1637–1654. Mensky, M. B. (1998) Decoherence and the theory of continuous quantum. Physics-Uspekhi 41, 923 –940 quant-ph/9812017. The decoherence of a quantum system, . its becoming partly classical, results from its interaction with the environment and is well described in terms of continuous quantum measurement theory.

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The model requires some familiarity with quantum theory basics . Analogies are made between visualisable classical phase spaces and Hilbert spaces. Quantum superposition of states and decoherence measurement through Rabi oscillations. Decoherence can be modelled as a non-unitary process by which a system couples with its environment (although the combined system plus environment evolves in a unitary fashion). Thus the dynamics of the system alone, treated in isolation, are non-unitary and, as such, are represented by irreversible transformations acting on the system's Hilbert space.

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.
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