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Unconventional pairing in few-fermion systems tuned by external confinement

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cris.lastimport.scopus2024-02-12T20:42:17Z
dc.abstract.enWe study the ground-state properties of a two-component one-dimensional system of a few ultra-cold fermions with attractive interactions. We show that, by ramping up an external potential barrier felt by one of the components, it is possible to induce regions of exotic superfluid phases, characterized by a tunable finite net momentum of the Cooper pair, without changing the overall spin populations. We show that these phases, which are the few-body analogs of the celebrated Fulde-Ferrell-Larkin-Ovchinnikov state, can be distinguished by analyzing a specific two-particle correlation encoded in the noise correlation function. Our theoretical results can be addressed in current experiments with cold atoms confined in spin-selective optical traps.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorSowiński, Tomasz
dc.contributor.authorDobrzyniecki, Jacek
dc.contributor.authorOrso, Giuliano
dc.date.accessioned2024-01-26T11:18:55Z
dc.date.available2024-01-26T11:18:55Z
dc.date.copyright2021-11-10
dc.date.issued2021
dc.description.accesstimeAT_PUBLICATION
dc.description.financePublikacja bezkosztowa
dc.description.number4
dc.description.versionFINAL_PUBLISHED
dc.description.volume3
dc.identifier.doi10.1103/PHYSREVRESEARCH.3.043105
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/124147
dc.identifier.weblinkhttps://link.aps.org/article/10.1103/PhysRevResearch.3.043105
dc.languageeng
dc.pbn.affiliationphysical sciences
dc.relation.ispartofPhysical Review Research
dc.relation.pages043105-1-10
dc.rightsCC-BY
dc.sciencecloudnosend
dc.titleUnconventional pairing in few-fermion systems tuned by external confinement
dc.typeJournalArticle
dspace.entity.typePublication