Interaction-free measurements by quantum Zeno stabilization of ultracold atoms

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dc.identifier.uri Peise, Jan Lücke, Bernd Pezze, L. Deuretzbacher, Frank Ertmer, Wolfgang Arlt, J.J. Smerzi, A. Santos, Luis Klempt, Carsten 2016-08-29T08:04:56Z 2016-08-29T08:04:56Z 2015-04
dc.identifier.citation Peise, J.; Luecke, B.; Pezze, L.; Deuretzbacher, F.; Ertmer, W. et al.: Interaction-free measurements by quantum Zeno stabilization of ultracold atoms. In: Nature Communications 6 (2015) , 6811. DOI:
dc.description.abstract Quantum mechanics predicts that our physical reality is influenced by events that can potentially happen but factually do not occur. Interaction-free measurements (IFMs) exploit this counterintuitive influence to detect the presence of an object without requiring any interaction with it. Here we propose and realize an IFM concept based on an unstable many-particle system. In our experiments, we employ an ultracold gas in an unstable spin configuration, which can undergo a rapid decay. The object-realized by a laser beam-prevents this decay because of the indirect quantum Zeno effect and thus, its presence can be detected without interacting with a single atom. Contrary to existing proposals, our IFM does not require single-particle sources and is only weakly affected by losses and decoherence. We demonstrate confidence levels of 90%, well beyond previous optical experiments. eng
dc.description.sponsorship QUEST
dc.description.sponsorship DFG/Research Training Group/1729
dc.description.sponsorship DFG/SA1031/7-1
dc.description.sponsorship Danish Council for Independent Research
dc.description.sponsorship Lundbeck Foundation
dc.description.sponsorship EU/EURAMET/European Metrology Research Programme (EMRP)
dc.language.iso eng
dc.publisher London : Nature Publishing Group
dc.relation.ispartofseries Nature Communications 6 (2015)
dc.rights CC BY 4.0
dc.subject interrogation eng
dc.subject decay eng
dc.subject.ddc 530 | Physik ger
dc.title Interaction-free measurements by quantum Zeno stabilization of ultracold atoms
dc.type article
dc.type Text
dc.relation.issn 2041-1723
dc.bibliographicCitation.volume 6
dc.bibliographicCitation.firstPage 6811
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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