Quantum Effects in Information Transmission Systems PDF Download

Author: I. A. Deryugin
Publisher:
ISBN:
Category : Information theory
Languages : en
Pages : 266

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Author: United States. National Aeronautics and Space Administration Scientific and Technical Information Division
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 428

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Author: Sherman Karp
Publisher:
ISBN:
Category : Quantum communication
Languages : en
Pages : 28

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This report presents a method for evaluating the theoretical performance of quantum communication systems based on the communication efficiency parameter, β = P/NoR. For Gaussian systems, β represents the minimum average amount of energy required to decipher a bit of information, with zero error, in the presence of white noise of spectral density No. For certain quantum systems, the Gaussian result is directly applicable with No replaced by hv. In general, β is recognized to be the minimum number of average (photon) events required to decipher a bit of information with zero error. To make comparisons with Gaussian systems, the parameter K is introduced and hv/K becomes the effective Gaussian spectral density of the quantum system. Several systems are considered in addition to the capacity bound for the narrow-band quantum channel introduced by Gordon. Unlike the Gaussian channel, there is no lower bound on β as the bandwidth-to-data-rate ratio, α, is increased. Thus β can be continually decreased at the expense of average data rate. For large values of α, PPM direct detection asymptotically approaches the lower bound for β

Author:
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 1158

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Author: Dmitry Nikolaevich Lyubimov
Publisher: CRC Press
ISBN: 1351649515
Category : Science
Languages : en
Pages : 231

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Quantum Effects in Tribology is devoted to the study of quantum foundations of materials friction interaction and evolutionary formation of tribosystem’s operating parameters. At the start of the book, large consideration is given to the analysis of the existing diversity of friction, wear, and lubrication models and their relationship with each other, as well as to the quantum nature of the measurement process and the wave function reduction caused by the act of measurement. Consideration of measurement as a process of defining the output parameters of tribosystem is carried out with the apparatus of second quantization and conceptions associated with non-local quantum effects. Such an approach makes it possible not only to take another look to the evolution of tribosystems but discover previously unknown regularities of friction. The book is intended for professionals working in the field of tribology, but will be also useful for graduate students specializing in the theory of friction and quantum physics.

Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 988

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Author: Masanori Ohya
Publisher: World Scientific
ISBN: 9812794190
Category : Science
Languages : en
Pages : 489

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This volume is a collection of articles written by Professor M Ohya over the past three decades in the areas of quantum teleportation, quantum information theory, quantum computer, etc. By compiling Ohya's important works in these areas, the book serves as a useful reference for researchers who are working in these fields.

Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 820

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Author: IBP USA
Publisher: Lulu.com
ISBN: 1433063190
Category : Business & Economics
Languages : en
Pages : 312

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2011 Updated Reprint. Updated Annually. Japan Research & Development Policy Handbook

Author: United States. National Aeronautics and Space Administration. Scientific and Technical Information Division
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 436

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