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One-dimensional transport of bosons between weakly linked reservoirs

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posted on 2023-06-09, 04:53 authored by D P Simpson, D M Gangardt, I V Lerner, Peter KruegerPeter Krueger
We 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

History

Publication status

  • Published

File Version

  • Published version

Journal

Physical Review Letters

ISSN

0031-9007

Publisher

American Physical Society

Issue

10

Volume

112

Page range

0601

Department 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

2017-01-24

First Open Access (FOA) Date

2017-01-24

First Compliant Deposit (FCD) Date

2017-01-24

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