Relaxation Dynamics in the Merging of N Independent Condensates.
Phys Rev Lett
; 119(19): 190403, 2017 Nov 10.
Article
em En
| MEDLINE
| ID: mdl-29219502
ABSTRACT
Controlled quantum systems such as ultracold atoms can provide powerful platforms to study nonequilibrium dynamics of closed many-body quantum systems, especially since a complete theoretical description is generally challenging. In this Letter, we present a detailed study of the rich out-of-equilibrium dynamics of an adjustable number N of uncorrelated condensates after connecting them in a ring-shaped optical trap. We observe the formation of long-lived supercurrents and confirm the scaling of their winding number with N in agreement with the geodesic rule. Moreover, we provide insight into the microscopic mechanism that underlies the smoothening of the phase profile.
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MEDLINE
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En
Ano de publicação:
2017
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Article