Wehrl information entropy and phase distributions of Schrodinger cat and cat-like states
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F01%3A00001238" target="_blank" >RIV/61989592:15310/01:00001238 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Wehrl information entropy and phase distributions of Schrodinger cat and cat-like states
Original language description
The Wehrl information entropy and its phase density, the so-called Wehrl phase distribution, are applied to describe Schrodinger cat and cat-like (kitten) states. The advantages of the Wehrl phase distribution over the Wehrl entropy in a description of the superposition principle are presented. The entropic measures are compared with a conventional phase distribution from the Husimi Q-function. Compact-form formulae for the entropic measures are found for superpositions of well separated states. Examples of Schrodinger cats (including even, odd and Yurke-Stoler coherent states), as well as the catlike states generated in the Kerr medium, are analysed in detail. It is shown that, in contrast to the Wehrl entropy, the Wehrl phase distribution properly distinguishes between different superpositions of unequally weighted states with respect to their number and phase-space configuration.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BH - Optics, masers and lasers
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2001
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Physics A: Mathematical and General
ISSN
0305-4470
e-ISSN
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Volume of the periodical
34
Issue of the periodical within the volume
N
Country of publishing house
GB - UNITED KINGDOM
Number of pages
10
Pages from-to
3887-3896
UT code for WoS article
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EID of the result in the Scopus database
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