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dc.rights.licenseAttribution 4.0 International*
dc.contributor.authorApellaniz, Iagoba
dc.contributor.otherVitagliano, Giuseppe
dc.contributor.otherFade, Matteo
dc.contributor.otherKleinmann, Matthias
dc.contributor.otherLücke, Bernd
dc.contributor.otherKlempt, Carsten
dc.contributor.otherTóth, Géza
dc.date.accessioned2023-04-17T13:03:39Z
dc.date.available2023-04-17T13:03:39Z
dc.date.issued2023
dc.identifier.issn2521-327Xen
dc.identifier.otherhttps://katalogoa.mondragon.edu/janium-bin/janium_login_opac.pl?find&ficha_no=172453en
dc.identifier.urihttps://hdl.handle.net/20.500.11984/6073
dc.description.abstractWe present a method to detect bipartite entanglement based on number-phase-like uncertainty relations in split spin ensembles. First, we derive an uncertainty relation that plays the role of a number-phase uncertainty for spin systems. It is important that the relation is given with well-defined and easily measurable quantities, and that it does not need assuming infinite dimensional systems. Based on this uncertainty relation, we show how to detect bipartite entanglement in an unpolarized Dicke state of many spin-1/2 particles. The particles are split into two subensembles, then collective angular momentum measurements are carried out locally on the two parts. First, we present a bipartite Einstein-Podolsky-Rosen (EPR) steering criterion. Then, we present an entanglement condition that can detect bipartite entanglement in such systems. We demonstrate the utility of the criteria by applying them to a recent experiment given in K. Lange et al. [Science 360, 416 (2018)] realizing a Dicke state in a Bose-Einstein condensate of cold atoms, in which the two subensembles were spatially separated from each other. Our methods also work well if split spin-squeezed states are considered. We show in a comprehensive way how to handle experimental imperfections, such as the nonzero particle number variance including the partition noise, and the fact that, while ideally BECs occupy a single spatial mode, in practice the population of other spatial modes cannot be fully suppressed.en
dc.language.isoengen
dc.publisherQuantumen
dc.rights© 2023 The Authorsen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.titleNumber-phase uncertainty relations and bipartite entanglement detection in spin ensemblesen
dcterms.accessRightshttp://purl.org/coar/access_right/c_abf2en
dcterms.sourceQuantumen
local.description.peerreviewedtrueen
local.identifier.doihttps://doi.org/10.22331/q-2023-02-09-914en
local.contributor.otherinstitutionhttps://ror.org/03anc3s24en
local.contributor.otherinstitutionhttps://ror.org/000xsnr85eu
local.contributor.otherinstitutionhttps://ror.org/05a28rw58de
local.contributor.otherinstitutionhttps://ror.org/02s6k3f65en
local.contributor.otherinstitutionhttps://ror.org/02azyry73de
local.contributor.otherinstitutionhttps://ror.org/0304hq317de
local.contributor.otherinstitutionhttps://ror.org/04bwf3e34de
local.contributor.otherinstitutionhttps://ror.org/02e24yw40en
local.contributor.otherinstitutionhttps://ror.org/01cc3fy72en
local.contributor.otherinstitutionhttps://ror.org/035dsb084en
local.source.detailsVol. 7. P. 914en
oaire.format.mimetypeapplication/pdfen
oaire.file$DSPACE\assetstoreen
oaire.resourceTypehttp://purl.org/coar/resource_type/c_6501en
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85en


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Attribution 4.0 International
Except where otherwise noted, this item's license is described as Attribution 4.0 International