Effect of inter-well interactions on non-linear beam splitters for matter-wave interferometers

• Verfasst von: Baroni, Cosetta [VerfasserIn]
• Verfasst von: Gori, Giacomo [VerfasserIn]
• Verfasst von: Chiofalo, Maria Luisa [VerfasserIn]
• Verfasst von: Trombettoni, Andrea [VerfasserIn]
• Titel: Effect of inter-well interactions on non-linear beam splitters for matter-wave interferometers
• Verf.angabe: Cosetta Baroni, Giacomo Gori, Maria Luisa Chiofalo and Andrea Trombettoni
• E-Jahr: 2020
• Jahr: 21 April 2020
• Umfang: 16 S.
• Fussnoten: Gesehen am 07.10.2022
• Titel Quelle: Enthalten in: Condensed Matter
• Ort Quelle: Basel : MDPI, 2016
• Jahr Quelle: 2020
• Band/Heft Quelle: 5(2020), 2, Artikel-ID 31, Seite 1-16
• ISSN Quelle: 2410-3896
• DOI: doi:10.3390/condmat5020031
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: atom interferometry
• Sach-SW: precision measurements
• Sach-SW: strongly correlated fluids
• Sach-SW: ultracold quantum gases
• K10plus-PPN: 1818179547

Abstract

We study the non-linear beam splitter in matter-wave interferometers using ultracold quantum gases in a double-well configuration in presence of non-local interactions inducing inter-well density-density coupling, as they can be realized, e.g., with dipolar gases. We explore this effect after considering different input states, in the form of either coherent, or Twin-Fock, or NOON states. We first review the non-interacting limit and the case in which only the local interaction is present, including the study of sensitivity near the self-trapping threshold. Then, we consider the two-mode model in the presence of inter-well interactions and consider the scaling of the sensitivity as a function of the non-local coupling strength. Our analysis clearly shows that non-local interactions can compensate the degradation of the sensitivity induced by local interactions, so that they may be used to restore optimal sensitivity.