Details
| Original language | English |
|---|---|
| Article number | 033024 |
| Journal | Physical Review Research |
| Volume | 4 |
| Issue number | 3 |
| Publication status | Published - 11 Jul 2022 |
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.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Physical Review Research, Vol. 4, No. 3, 033024, 11.07.2022.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Implementation of an atomtronic SQUID in a strongly confined toroidal condensate
AU - Kiehn, Hannes
AU - Singh, Vijay Pal
AU - Mathey, Ludwig
N1 - Funding Information: We thank Kevin Wright, Luigi Amico, and Giacomo Roati for insightful discussions. This work is supported by the Deutsche Forschungsgemeinschaft (DFG) in the framework of SFB 925 - Project No. 170620586 and the excellence cluster “Advanced Imaging of Matter” - EXC 2056 - Project No. 390715994, and the Cluster of Excellence “QuantumFrontiers” - EXC 2123 - Project No. 390837967.
PY - 2022/7/11
Y1 - 2022/7/11
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85135920576&partnerID=8YFLogxK
U2 - 10.1103/PhysRevResearch.4.033024
DO - 10.1103/PhysRevResearch.4.033024
M3 - Article
VL - 4
JO - Physical Review Research
JF - Physical Review Research
SN - 2643-1564
IS - 3
M1 - 033024
ER -