Quantitative Acoustic Models for Superfluid Circuits
We experimentally realize a highly tunable superfluid oscillator circuit in a quantum gas of ultracold atoms and develop and verify a simple lumped-element description of this circuit. At low oscillator currents, we demonstrate that the circuit is accurately described as a Helmholtz resonator, a fundamental element of acoustic circuits. At larger currents, the breakdown of the Helmholtz regime is heralded by a turbulent shedding of vortices and density waves. Although a simple phase-slip model offers qualitative insights into the circuit's resistive behavior, our results indicate deviations from the phase-slip model. A full understanding of the dissipation in superfluid circuits will thus require the development of empirical models of the turbulent dynamics in this system, as have been developed for classical acoustic systems.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2019 |
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| Erschienen: |
2019 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:123 |
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| Enthalten in: |
Physical review letters - 123(2019), 26 vom: 31. Dez., Seite 260402 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Gauthier, Guillaume [VerfasserIn] |
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| Anmerkungen: |
Date Completed 21.01.2020 Date Revised 21.01.2020 published: Print Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1103/PhysRevLett.123.260402 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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NLM305497111 |
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| 500 | |a published: Print | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a We experimentally realize a highly tunable superfluid oscillator circuit in a quantum gas of ultracold atoms and develop and verify a simple lumped-element description of this circuit. At low oscillator currents, we demonstrate that the circuit is accurately described as a Helmholtz resonator, a fundamental element of acoustic circuits. At larger currents, the breakdown of the Helmholtz regime is heralded by a turbulent shedding of vortices and density waves. Although a simple phase-slip model offers qualitative insights into the circuit's resistive behavior, our results indicate deviations from the phase-slip model. A full understanding of the dissipation in superfluid circuits will thus require the development of empirical models of the turbulent dynamics in this system, as have been developed for classical acoustic systems | ||
| 650 | 4 | |a Journal Article | |
| 700 | 1 | |a Szigeti, Stuart S |e verfasserin |4 aut | |
| 700 | 1 | |a Reeves, Matthew T |e verfasserin |4 aut | |
| 700 | 1 | |a Baker, Mark |e verfasserin |4 aut | |
| 700 | 1 | |a Bell, Thomas A |e verfasserin |4 aut | |
| 700 | 1 | |a Rubinsztein-Dunlop, Halina |e verfasserin |4 aut | |
| 700 | 1 | |a Davis, Matthew J |e verfasserin |4 aut | |
| 700 | 1 | |a Neely, Tyler W |e verfasserin |4 aut | |
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