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Titolo:
Wehrl information entropy and phase distributions of Schrodinger cat and cat-like states
Autore:
Miranowicz, A; Bajer, J; Wahiddin, MRB; Imoto, N;
Indirizzi:
Grad Univ Adv Studies, SOKEN, Sch Adv Sci, CRESt Res Team Interacting Carreir Elect, Yokohama, Kanagawa 2400193, Japan Grad Univ Adv Studies Yokohama Kanagawa Japan 2400193 gawa 2400193, Japan Adam Mickiewicz Univ, Inst Phys, Div Nonlinear Opt, PL-61614 Poznan, Poland Adam Mickiewicz Univ Poznan Poland PL-61614 Opt, PL-61614 Poznan, Poland Palacky Univ, Dept Opt, Olomouc 77200, Czech Republic Palacky Univ Olomouc Czech Republic 77200 Olomouc 77200, Czech Republic Univ Malaya, Inst Math Sci, Kuala Lumpur 50603, Malaysia Univ Malaya Kuala Lumpur Malaysia 50603 ci, Kuala Lumpur 50603, Malaysia
Titolo Testata:
JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL
fascicolo: 18, volume: 34, anno: 2001,
pagine: 3887 - 3896
SICI:
0305-4470(20010511)34:18<3887:WIEAPD>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
SAMPLING ENTROPIES; SPACE MEASUREMENT; COHERENT STATES; OPTICAL-FIELDS; QUANTUM; UNCERTAINTY; SUPERPOSITIONS; DYNAMICS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Miranowicz, A Grad Univ Adv Studies, SOKEN, Sch Adv Sci, CRESt Res Team Interacting Carreir Elect, Yokohama, Kanagawa 2400193, Japan Grad Univ Adv Studies Yokohama Kanagawa Japan 2400193 Japan
Citazione:
A. Miranowicz et al., "Wehrl information entropy and phase distributions of Schrodinger cat and cat-like states", J PHYS A, 34(18), 2001, pp. 3887-3896

Abstract

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 Wehrlentropy in a description of the superposition principle are presented, Theentropic measures are compared with a conventional phase distribution fromthe Husimi e-function. Compact-form formulae for the entropic measures arefound for superpositions of well separated states. Examples of Schrodingercats (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.

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Documento generato il 21/09/20 alle ore 16:00:45