Implementation of an atomtronic SQUID in a strongly confined toroidal condensate
Abstract
We investigate the dynamics of an atomtronic superconducting quantum interference device (SQUID) created by two mobile barriers, moving at two different, constant velocities in a quasi-one-dimensional toroidal condensate. We implement a multiband truncated Wigner approximation numerically to demonstrate the functionality of a SQUID reflected in the oscillatory voltage-flux dependence. The relative velocity of the two barriers results in a chemical potential imbalance analogous to a voltage in an electronic system. The average velocity of the two barriers corresponds to a rotation of the condensate, analogous to a magnetic flux. We demonstrate that the voltage equivalent shows characteristic flux-dependent oscillations. We point out the parameter regime of barrier heights and relaxation times for the phase slip dynamics, resulting in a realistic protocol for atomtronic SQUID operation.
Details
- Organisation(s)
-
QuantumFrontiers
- External Organisation(s)
-
Universität Hamburg
- Type
- Article
- Journal
- Physical Review Research
- Volume
- 4
- ISSN
- 2643-1564
- Publication date
- 11.07.2022
- Publication status
- Published
- Peer reviewed
- Yes
- ASJC Scopus subject areas
- General Physics and Astronomy
- Electronic version(s)
-
https://doi.org/10.1103/PhysRevResearch.4.033024 (Access:
Open
)
