Quantum degenerate Bose-Fermi mixture of chemically different atomic species with widely tunable interactions
We have created a quantum degenerate Bose-Fermi mixture of [superscript 23]Na and [superscript 40]K with widely tunable interactions via broad interspecies Feshbach resonances. Over 30 Feshbach resonances between [superscript 23]Na and [superscript 40]K were identified, including p-wave multiplet re...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2012
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| Online Access: | http://hdl.handle.net/1721.1/71722 https://orcid.org/0000-0003-4329-5163 https://orcid.org/0000-0001-8120-8548 https://orcid.org/0000-0003-2672-5264 |
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| author | Park, Jee Woo Wu, Cheng-Hsun Santiago, Ibon Tiecke, Tobias G. Will, Sebastian Ahmadi, Peyman Zwierlein, Martin Wolfram |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Park, Jee Woo Wu, Cheng-Hsun Santiago, Ibon Tiecke, Tobias G. Will, Sebastian Ahmadi, Peyman Zwierlein, Martin Wolfram |
| author_sort | Park, Jee Woo |
| collection | MIT |
| description | We have created a quantum degenerate Bose-Fermi mixture of [superscript 23]Na and [superscript 40]K with widely tunable interactions via broad interspecies Feshbach resonances. Over 30 Feshbach resonances between [superscript 23]Na and [superscript 40]K were identified, including p-wave multiplet resonances. The large and negative triplet background scattering length between [superscript 23]Na and [superscript 40]K causes a sharp enhancement of the fermion density in the presence of a Bose condensate. As explained via the asymptotic bound-state model, this strong background scattering leads to wide Feshbach resonances observed at low magnetic fields. Our work opens up the prospect to create chemically stable, fermionic ground-state molecules of [superscript 23]Na-[superscript 40]K, where strong, long-range dipolar interactions would set the dominant energy scale. |
| first_indexed | 2024-09-23T15:19:52Z |
| format | Article |
| id | mit-1721.1/71722 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:19:52Z |
| publishDate | 2012 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/717222022-10-02T02:11:47Z Quantum degenerate Bose-Fermi mixture of chemically different atomic species with widely tunable interactions Park, Jee Woo Wu, Cheng-Hsun Santiago, Ibon Tiecke, Tobias G. Will, Sebastian Ahmadi, Peyman Zwierlein, Martin Wolfram Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Research Laboratory of Electronics MIT-Harvard Center for Ultracold Atoms Zwierlein, Martin Wolfram Park, Jee Woo Wu, Cheng-Hsun Santiago, Ibon Tiecke, Tobias G. Will, Sebastian Ahmadi, Peyman Zwierlein, Martin Wolfram We have created a quantum degenerate Bose-Fermi mixture of [superscript 23]Na and [superscript 40]K with widely tunable interactions via broad interspecies Feshbach resonances. Over 30 Feshbach resonances between [superscript 23]Na and [superscript 40]K were identified, including p-wave multiplet resonances. The large and negative triplet background scattering length between [superscript 23]Na and [superscript 40]K causes a sharp enhancement of the fermion density in the presence of a Bose condensate. As explained via the asymptotic bound-state model, this strong background scattering leads to wide Feshbach resonances observed at low magnetic fields. Our work opens up the prospect to create chemically stable, fermionic ground-state molecules of [superscript 23]Na-[superscript 40]K, where strong, long-range dipolar interactions would set the dominant energy scale. National Science Foundation (U.S.) United States. Air Force Office of Scientific Research. Multidisciplinary University Research Initiative Presidential Early Career Award for Scientists and Engineers United States. Army Research Office. Multidisciplinary University Research Initiative United States. Defense Advanced Research Projects Agency. Young Faculty Award United States. Office of Naval Research. Young Investigator Program 2012-07-20T13:34:15Z 2012-07-20T13:34:15Z 2012-05 2011-10 Article http://purl.org/eprint/type/JournalArticle 1050-2947 1094-1622 http://hdl.handle.net/1721.1/71722 Park, Jee Woo et al. “Quantum Degenerate Bose-Fermi Mixture of Chemically Different Atomic Species with Widely Tunable Interactions.” Physical Review A 85.5 (2012). ©2012 American Physical Society https://orcid.org/0000-0003-4329-5163 https://orcid.org/0000-0001-8120-8548 https://orcid.org/0000-0003-2672-5264 en_US http://dx.doi.org/10.1103/PhysRevA.85.051602 Physical Review A 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. application/pdf American Physical Society APS |
| spellingShingle | Park, Jee Woo Wu, Cheng-Hsun Santiago, Ibon Tiecke, Tobias G. Will, Sebastian Ahmadi, Peyman Zwierlein, Martin Wolfram Quantum degenerate Bose-Fermi mixture of chemically different atomic species with widely tunable interactions |
| title | Quantum degenerate Bose-Fermi mixture of chemically different atomic species with widely tunable interactions |
| title_full | Quantum degenerate Bose-Fermi mixture of chemically different atomic species with widely tunable interactions |
| title_fullStr | Quantum degenerate Bose-Fermi mixture of chemically different atomic species with widely tunable interactions |
| title_full_unstemmed | Quantum degenerate Bose-Fermi mixture of chemically different atomic species with widely tunable interactions |
| title_short | Quantum degenerate Bose-Fermi mixture of chemically different atomic species with widely tunable interactions |
| title_sort | quantum degenerate bose fermi mixture of chemically different atomic species with widely tunable interactions |
| url | http://hdl.handle.net/1721.1/71722 https://orcid.org/0000-0003-4329-5163 https://orcid.org/0000-0001-8120-8548 https://orcid.org/0000-0003-2672-5264 |
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