Minimally destructive, Doppler measurement of a quantized flow in a ring-shaped Bose–Einstein condensate
The Doppler effect, the shift in the frequency of sound due to motion, is present in both classical gases and quantum superfluids. Here, we perform an in situ , minimally destructive measurement, of the persistent current in a ring-shaped, superfluid Bose–Einstein condensate using the Doppler effect...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2016-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/18/2/025001 |
| _version_ | 1797750793343860736 |
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| author | A Kumar N Anderson W D Phillips S Eckel G K Campbell S Stringari |
| author_facet | A Kumar N Anderson W D Phillips S Eckel G K Campbell S Stringari |
| author_sort | A Kumar |
| collection | DOAJ |
| description | The Doppler effect, the shift in the frequency of sound due to motion, is present in both classical gases and quantum superfluids. Here, we perform an in situ , minimally destructive measurement, of the persistent current in a ring-shaped, superfluid Bose–Einstein condensate using the Doppler effect. Phonon modes generated in this condensate have their frequencies Doppler shifted by a persistent current. This frequency shift will cause a standing-wave phonon mode to be ‘dragged’ along with the persistent current. By measuring this precession, one can extract the background flow velocity. This technique will find utility in experiments where the winding number is important, such as in emerging ‘atomtronic’ devices. |
| first_indexed | 2024-03-12T16:38:57Z |
| format | Article |
| id | doaj.art-e2c8a42eb3b546c7b555d4e27f8b5d16 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:38:57Z |
| publishDate | 2016-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-e2c8a42eb3b546c7b555d4e27f8b5d162023-08-08T14:38:24ZengIOP PublishingNew Journal of Physics1367-26302016-01-0118202500110.1088/1367-2630/18/2/025001Minimally destructive, Doppler measurement of a quantized flow in a ring-shaped Bose–Einstein condensateA Kumar0N Anderson1W D Phillips2S Eckel3G K Campbell4S Stringari5Joint Quantum Institute, National Institute of Standards and Technology and University of Maryland , Gaithersburg, MD 20899, USAJoint Quantum Institute, National Institute of Standards and Technology and University of Maryland , Gaithersburg, MD 20899, USAJoint Quantum Institute, National Institute of Standards and Technology and University of Maryland , Gaithersburg, MD 20899, USAJoint Quantum Institute, National Institute of Standards and Technology and University of Maryland , Gaithersburg, MD 20899, USAJoint Quantum Institute, National Institute of Standards and Technology and University of Maryland , Gaithersburg, MD 20899, USAINO-CNR BEC Center and Dipartimento di Fisica, Università di Trento , I-38123 Povo, ItalyThe Doppler effect, the shift in the frequency of sound due to motion, is present in both classical gases and quantum superfluids. Here, we perform an in situ , minimally destructive measurement, of the persistent current in a ring-shaped, superfluid Bose–Einstein condensate using the Doppler effect. Phonon modes generated in this condensate have their frequencies Doppler shifted by a persistent current. This frequency shift will cause a standing-wave phonon mode to be ‘dragged’ along with the persistent current. By measuring this precession, one can extract the background flow velocity. This technique will find utility in experiments where the winding number is important, such as in emerging ‘atomtronic’ devices.https://doi.org/10.1088/1367-2630/18/2/025001atomtronic devicespersistent currentssuperfluidity |
| spellingShingle | A Kumar N Anderson W D Phillips S Eckel G K Campbell S Stringari Minimally destructive, Doppler measurement of a quantized flow in a ring-shaped Bose–Einstein condensate New Journal of Physics atomtronic devices persistent currents superfluidity |
| title | Minimally destructive, Doppler measurement of a quantized flow in a ring-shaped Bose–Einstein condensate |
| title_full | Minimally destructive, Doppler measurement of a quantized flow in a ring-shaped Bose–Einstein condensate |
| title_fullStr | Minimally destructive, Doppler measurement of a quantized flow in a ring-shaped Bose–Einstein condensate |
| title_full_unstemmed | Minimally destructive, Doppler measurement of a quantized flow in a ring-shaped Bose–Einstein condensate |
| title_short | Minimally destructive, Doppler measurement of a quantized flow in a ring-shaped Bose–Einstein condensate |
| title_sort | minimally destructive doppler measurement of a quantized flow in a ring shaped bose einstein condensate |
| topic | atomtronic devices persistent currents superfluidity |
| url | https://doi.org/10.1088/1367-2630/18/2/025001 |
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