10-1103-PhysRevLett-112-100601.pdf (3.06 MB)
One-dimensional transport of bosons between weakly linked reservoirs
journal contribution
posted on 2023-06-09, 04:53 authored by D P Simpson, D M Gangardt, I V Lerner, Peter KruegerPeter KruegerWe study a flow of ultracold bosonic atoms through a one-dimensional channel that connects two macroscopic three-dimensional reservoirs of Bose-condensed atoms via weak links implemented as potential barriers between each of the reservoirs and the channel. We consider reservoirs at equal chemical potentials so that a superflow of the quasicondensate through the channel is driven purely by a phase difference 2F imprinted between the reservoirs. We find that the superflow never has the standard Josephson form ~ sin 2F. Instead, the superflow discontinuously flips direction at 2F ¼ _p and has metastable branches.We show that these features are robust and not smeared by fluctuations or phase slips. We describe a possible experimental setup for observing these phenomena
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Publication status
- Published
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- Published version
Journal
Physical Review LettersISSN
0031-9007Publisher
American Physical SocietyExternal DOI
Issue
10Volume
112Page range
0601Department affiliated with
- Physics and Astronomy Publications
Research groups affiliated with
- Atomic, Molecular and Optical Physics Research Group Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2017-01-24First Open Access (FOA) Date
2017-01-24First Compliant Deposit (FCD) Date
2017-01-24Usage metrics
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