Motional coherence of fermions immersed in a bose gas

• Verfasst von: Scelle, Raphael [VerfasserIn]
• Verfasst von: Rentrop, Tobias [VerfasserIn]
• Verfasst von: Trautmann, Arno [VerfasserIn]
• Verfasst von: Schuster, T. [VerfasserIn]
• Verfasst von: Oberthaler, Markus K. [VerfasserIn]
• Titel: Motional coherence of fermions immersed in a bose gas
• Verf.angabe: R. Scelle, T. Rentrop, A. Trautmann, T. Schuster, and M.K. Oberthaler
• E-Jahr: 2013
• Jahr: 14 August 2013
• Umfang: 5 S.
• Fussnoten: Gesehen am 01.02.2022
• Titel Quelle: Enthalten in: Physical review letters
• Ort Quelle: College Park, Md. : APS, 1958
• Jahr Quelle: 2013
• Band/Heft Quelle: 111(2013), 7 vom: 16. Aug., Artikel-ID 070401, Seite 1-5
• ISSN Quelle: 1079-7114
• DOI: doi:10.1103/PhysRevLett.111.070401
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1787983048

Abstract

We prepare a superposition of two motional states by addressing lithium atoms immersed in a Bose-Einstein condensate of sodium with a species-selective potential. The evolution of the superposition state is characterized by the populations of the constituent states as well as their coherence. The latter we extract employing a novel scheme analogous to the spin-echo technique. Comparing the results directly to measurements on freely evolving fermions allows us to isolate the decoherence effects induced by the bath. In our system, the decoherence time is close to the maximal possible value since the decoherence is dominated by population relaxation processes. The measured data are in good agreement with a theoretical model based on Fermi’s golden rule.