Spontaneous breaking of spatial and spin symmetry in spinor condensates

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dc.identifier.uri http://dx.doi.org/10.15488/1884
dc.identifier.uri http://www.repo.uni-hannover.de/handle/123456789/1909
dc.contributor.author Scherer, Manuel
dc.contributor.author Lücke, Bernd
dc.contributor.author Gebreyesus, Garu
dc.contributor.author Topic, Oliver
dc.contributor.author Deuretzbacher, Frank
dc.contributor.author Ertmer, Wolfgang
dc.contributor.author Santos, Luis
dc.contributor.author Arlt, Jan J.
dc.contributor.author Klempt, Carsten
dc.date.accessioned 2017-09-14T07:14:19Z
dc.date.available 2017-09-14T07:14:19Z
dc.date.issued 2010
dc.identifier.citation Scherer, M.; Lücke, B.; Gebreyesus, G.; Topic, O.; Deuretzbacher, F. et al.: Spontaneous breaking of spatial and spin symmetry in spinor condensates. In: Physical Review Letters 105 (2010), Nr. 13, No. 135302. DOI: https://doi.org/10.1103/PhysRevLett.105.135302
dc.description.abstract Parametric amplification of quantum fluctuations constitutes a fundamental mechanism for spontaneous symmetry breaking. In our experiments, a spinor condensate acts as a parametric amplifier of spin modes, resulting in a twofold spontaneous breaking of spatial and spin symmetry in the amplified clouds. Our experiments permit a precise analysis of the amplification in specific spatial Bessel-like modes, allowing for the detailed understanding of the double symmetry breaking. On resonances that create vortex-antivortex superpositions, we show that the cylindrical spatial symmetry is spontaneously broken, but phase squeezing prevents spin-symmetry breaking. If, however, nondegenerate spin modes contribute to the amplification, quantum interferences lead to spin-dependent density profiles and hence spontaneously formed patterns in the longitudinal magnetization. © 2010 The American Physical Society. eng
dc.description.sponsorship DFG/EXC/QUEST
dc.description.sponsorship ESF/EuroQUASAR
dc.description.sponsorship Danish National Research Foundation Center for Quantum Optics (QUANTOP)
dc.language.iso eng
dc.publisher College Park, MD : American Physical Society
dc.relation.ispartofseries Physical Review Letters 105 (2010), Nr. 13
dc.rights Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden.
dc.subject Antivortex eng
dc.subject Density profile eng
dc.subject Longitudinal magnetization eng
dc.subject Parametric amplification eng
dc.subject Precise analysis eng
dc.subject Quantum fluctuation eng
dc.subject Quantum interference eng
dc.subject Spatial symmetry eng
dc.subject Spin modes eng
dc.subject Spin symmetry eng
dc.subject Spinor condensates eng
dc.subject Spontaneous symmetry breaking eng
dc.subject Symmetry-breaking eng
dc.subject Bioelectric phenomena eng
dc.subject Microwave amplifiers eng
dc.subject Parametric amplifiers eng
dc.subject Quantum electronics eng
dc.subject Amplification eng
dc.subject.ddc 530 | Physik ger
dc.title Spontaneous breaking of spatial and spin symmetry in spinor condensates
dc.type article
dc.type Text
dc.relation.issn 00319007
dc.relation.doi https://doi.org/10.1103/PhysRevLett.105.135302
dc.bibliographicCitation.issue 13
dc.bibliographicCitation.volume 105
dc.bibliographicCitation.firstPage 135302
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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