This HTML5 document contains 43 embedded RDF statements represented using HTML+Microdata notation.

The embedded RDF content will be recognized by any processor of HTML5 Microdata.

Namespace Prefixes

PrefixIRI
dctermshttp://purl.org/dc/terms/
n18http://localhost/temp/predkladatel/
n7http://linked.opendata.cz/resource/domain/vavai/projekt/
n10http://linked.opendata.cz/ontology/domain/vavai/
shttp://schema.org/
n5http://linked.opendata.cz/ontology/domain/vavai/riv/
skoshttp://www.w3.org/2004/02/skos/core#
rdfshttp://www.w3.org/2000/01/rdf-schema#
n6http://bibframe.org/vocab/
n2http://linked.opendata.cz/resource/domain/vavai/vysledek/
rdfhttp://www.w3.org/1999/02/22-rdf-syntax-ns#
n12http://linked.opendata.cz/resource/domain/vavai/vysledek/RIV%2F61989592%3A15310%2F14%3A33149237%21RIV15-MSM-15310___/
n11http://linked.opendata.cz/ontology/domain/vavai/riv/klicoveSlovo/
n9http://linked.opendata.cz/ontology/domain/vavai/riv/duvernostUdaju/
xsdhhttp://www.w3.org/2001/XMLSchema#
n15http://linked.opendata.cz/ontology/domain/vavai/riv/jazykVysledku/
n13http://linked.opendata.cz/ontology/domain/vavai/riv/aktivita/
n19http://linked.opendata.cz/ontology/domain/vavai/riv/obor/
n16http://linked.opendata.cz/ontology/domain/vavai/riv/druhVysledku/
n17http://reference.data.gov.uk/id/gregorian-year/

Statements

Subject Item
n2:RIV%2F61989592%3A15310%2F14%3A33149237%21RIV15-MSM-15310___
rdf:type
n10:Vysledek skos:Concept
rdfs:seeAlso
http://journals.aps.org/pra/pdf/10.1103/PhysRevA.89.033812
dcterms:description
Conventional Glauber coherent states (CS) can be defined in several equivalent ways, e.g., by displacing the vacuum or, explicitly, by their infinite Poissonian expansion in Fock states. It is well known that these definitions become inequivalent if applied to finite d-level systems (qudits). We present a comparative Wigner-function description of the qudit CS defined (i) by the action of the truncated displacement operator on the vacuum and (ii) by the Poissonian expansion in Fock states of the Glauber CS truncated at (d - 1)-photon Fock state. These states can be generated from a classical light by its optical truncation using nonlinear and linear quantum scissors devices, respectively. We show a surprising effect that a macroscopically distinguishable superposition of two qudit CS (according to both definitions) can be generated with high fidelity by displacing the vacuum in the qudit Hilbert space. If the qudit dimension d is even (odd), then the superposition state contains Fock states with only odd (even) photon numbers, which can be referred to as the odd (even) qudit CS or Schrodinger's cat state. This phenomenon can be interpreted as an interference of a single CS with its reflection from the highest-energy Fock state of the Hilbert space, as clearly seen via phase-space interference of the Wigner function. We also analyze nonclassical properties of the qudit CS including their photon-number statistics and nonclassical volume of the Wigner function, which is a quantitative parameter of nonclassicality (quantumness) of states. Finally, we study optical tomograms, which can be directly measured in the homodyne detection of the analyzed qudit cat states and enable the complete reconstructions of their Wigner functions. Conventional Glauber coherent states (CS) can be defined in several equivalent ways, e.g., by displacing the vacuum or, explicitly, by their infinite Poissonian expansion in Fock states. It is well known that these definitions become inequivalent if applied to finite d-level systems (qudits). We present a comparative Wigner-function description of the qudit CS defined (i) by the action of the truncated displacement operator on the vacuum and (ii) by the Poissonian expansion in Fock states of the Glauber CS truncated at (d - 1)-photon Fock state. These states can be generated from a classical light by its optical truncation using nonlinear and linear quantum scissors devices, respectively. We show a surprising effect that a macroscopically distinguishable superposition of two qudit CS (according to both definitions) can be generated with high fidelity by displacing the vacuum in the qudit Hilbert space. If the qudit dimension d is even (odd), then the superposition state contains Fock states with only odd (even) photon numbers, which can be referred to as the odd (even) qudit CS or Schrodinger's cat state. This phenomenon can be interpreted as an interference of a single CS with its reflection from the highest-energy Fock state of the Hilbert space, as clearly seen via phase-space interference of the Wigner function. We also analyze nonclassical properties of the qudit CS including their photon-number statistics and nonclassical volume of the Wigner function, which is a quantitative parameter of nonclassicality (quantumness) of states. Finally, we study optical tomograms, which can be directly measured in the homodyne detection of the analyzed qudit cat states and enable the complete reconstructions of their Wigner functions.
dcterms:title
Phase-space interference of states optically truncated by quantum scissors: Generation of distinct superpositions of qudit coherent states by displacement of vacuum Phase-space interference of states optically truncated by quantum scissors: Generation of distinct superpositions of qudit coherent states by displacement of vacuum
skos:prefLabel
Phase-space interference of states optically truncated by quantum scissors: Generation of distinct superpositions of qudit coherent states by displacement of vacuum Phase-space interference of states optically truncated by quantum scissors: Generation of distinct superpositions of qudit coherent states by displacement of vacuum
skos:notation
RIV/61989592:15310/14:33149237!RIV15-MSM-15310___
n5:aktivita
n13:P
n5:aktivity
P(EE2.3.20.0017)
n5:cisloPeriodika
3
n5:dodaniDat
n17:2015
n5:domaciTvurceVysledku
Pathak, Anirban
n5:druhVysledku
n16:J
n5:duvernostUdaju
n9:S
n5:entitaPredkladatele
n12:predkladatel
n5:idSjednocenehoVysledku
36407
n5:idVysledku
RIV/61989592:15310/14:33149237
n5:jazykVysledku
n15:eng
n5:klicovaSlova
single-photon; Wigner-function; dimensional Hilbert-space
n5:klicoveSlovo
n11:dimensional%20Hilbert-space n11:Wigner-function n11:single-photon
n5:kodStatuVydavatele
US - Spojené státy americké
n5:kontrolniKodProRIV
[1D846238C2BC]
n5:nazevZdroje
Physical Review A
n5:obor
n19:BH
n5:pocetDomacichTvurcuVysledku
1
n5:pocetTvurcuVysledku
4
n5:projekt
n7:EE2.3.20.0017
n5:rokUplatneniVysledku
n17:2014
n5:svazekPeriodika
89
n5:tvurceVysledku
Pathak, Anirban Paprzycka, Malgorzata Nori, Franco Miranowicz, Adam
n5:wos
000333174100022
s:issn
1050-2947
s:numberOfPages
12
n6:doi
10.1103/PhysRevA.89.033812
n18:organizacniJednotka
15310