Cascade of Solitonic Excitations in a Superfluid Fermi gas: From Planar Solitons to Vortex Rings and Lines
We follow the time evolution of a superfluid Fermi gas of resonantly interacting [superscript 6]Li atoms after a phase imprint. Via tomographic imaging, we observe the formation of a planar dark soliton, its subsequent snaking, and its decay into a vortex ring, which, in turn, breaks to finally leav...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2016
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| Online Access: | http://hdl.handle.net/1721.1/101072 https://orcid.org/0000-0002-7155-5412 https://orcid.org/0000-0003-1391-0428 https://orcid.org/0000-0001-8120-8548 https://orcid.org/0000-0001-9615-3981 |
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| author | Ku, Mark J. H. Mukherjee, Biswaroop Yefsah, Tarik Zwierlein, Martin Wolfram Ku, Mark J. H. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Ku, Mark J. H. Mukherjee, Biswaroop Yefsah, Tarik Zwierlein, Martin Wolfram Ku, Mark J. H. |
| author_sort | Ku, Mark J. H. |
| collection | MIT |
| description | We follow the time evolution of a superfluid Fermi gas of resonantly interacting [superscript 6]Li atoms after a phase imprint. Via tomographic imaging, we observe the formation of a planar dark soliton, its subsequent snaking, and its decay into a vortex ring, which, in turn, breaks to finally leave behind a single solitonic vortex. In intermediate stages, we find evidence for an exotic structure resembling the Φ soliton, a combination of a vortex ring and a vortex line. Direct imaging of the nodal surface reveals its undulation dynamics and its decay via the puncture of the initial soliton plane. The observed evolution of the nodal surface represents dynamics beyond superfluid hydrodynamics, calling for a microscopic description of unitary fermionic superfluids out of equilibrium. |
| first_indexed | 2024-09-23T16:02:50Z |
| format | Article |
| id | mit-1721.1/101072 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T16:02:50Z |
| publishDate | 2016 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1010722022-09-29T17:50:28Z Cascade of Solitonic Excitations in a Superfluid Fermi gas: From Planar Solitons to Vortex Rings and Lines Ku, Mark J. H. Mukherjee, Biswaroop Yefsah, Tarik Zwierlein, Martin Wolfram Ku, Mark J. H. Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Research Laboratory of Electronics MIT-Harvard Center for Ultracold Atoms Ku, Mark J. H. Mukherjee, Biswaroop Yefsah, Tarik Zwierlein, Martin Wolfram We follow the time evolution of a superfluid Fermi gas of resonantly interacting [superscript 6]Li atoms after a phase imprint. Via tomographic imaging, we observe the formation of a planar dark soliton, its subsequent snaking, and its decay into a vortex ring, which, in turn, breaks to finally leave behind a single solitonic vortex. In intermediate stages, we find evidence for an exotic structure resembling the Φ soliton, a combination of a vortex ring and a vortex line. Direct imaging of the nodal surface reveals its undulation dynamics and its decay via the puncture of the initial soliton plane. The observed evolution of the nodal surface represents dynamics beyond superfluid hydrodynamics, calling for a microscopic description of unitary fermionic superfluids out of equilibrium. National Science Foundation (U.S.) United States. Army Research Office. Multidisciplinary University Research Initiative on Atomtronics United States. Air Force Office of Scientific Research. Presidential Early Career Award for Scientists and Engineers United States. Air Force Office of Scientific Research. Multidisciplinary University Research Initiative on Exotic Phases David & Lucile Packard Foundation 2016-02-02T15:40:11Z 2016-02-02T15:40:11Z 2016-01 2015-07 2016-01-27T23:00:06Z Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/101072 Ku, Mark J. H., Biswaroop Mukherjee, Tarik Yefsah, and Martin W. Zwierlein. "Cascade of Solitonic Excitations in a Superfluid Fermi gas: From Planar Solitons to Vortex Rings and Lines." Phys. Rev. Lett. 116, 045304 (January 2016). © 2016 American Physical Society https://orcid.org/0000-0002-7155-5412 https://orcid.org/0000-0003-1391-0428 https://orcid.org/0000-0001-8120-8548 https://orcid.org/0000-0001-9615-3981 en http://dx.doi.org/10.1103/PhysRevLett.116.045304 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. American Physical Society application/pdf American Physical Society American Physical Society |
| spellingShingle | Ku, Mark J. H. Mukherjee, Biswaroop Yefsah, Tarik Zwierlein, Martin Wolfram Ku, Mark J. H. Cascade of Solitonic Excitations in a Superfluid Fermi gas: From Planar Solitons to Vortex Rings and Lines |
| title | Cascade of Solitonic Excitations in a Superfluid Fermi gas: From Planar Solitons to Vortex Rings and Lines |
| title_full | Cascade of Solitonic Excitations in a Superfluid Fermi gas: From Planar Solitons to Vortex Rings and Lines |
| title_fullStr | Cascade of Solitonic Excitations in a Superfluid Fermi gas: From Planar Solitons to Vortex Rings and Lines |
| title_full_unstemmed | Cascade of Solitonic Excitations in a Superfluid Fermi gas: From Planar Solitons to Vortex Rings and Lines |
| title_short | Cascade of Solitonic Excitations in a Superfluid Fermi gas: From Planar Solitons to Vortex Rings and Lines |
| title_sort | cascade of solitonic excitations in a superfluid fermi gas from planar solitons to vortex rings and lines |
| url | http://hdl.handle.net/1721.1/101072 https://orcid.org/0000-0002-7155-5412 https://orcid.org/0000-0003-1391-0428 https://orcid.org/0000-0001-8120-8548 https://orcid.org/0000-0001-9615-3981 |
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