Creation of a Bose-condensed gas of ⁸⁷Rb by laser cooling
Protocols for attaining quantum degeneracy in atomic gases almost exclusively rely on evaporative cooling, a time-consuming final step associated with substantial atom loss. We demonstrate direct laser cooling of a gas of rubidium-87 (⁸⁷Rb) atoms to quantum degeneracy. The method is fast and induces...
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| Format: | Article |
| Language: | en_US |
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American Association for the Advancement of Science (AAAS)
2017
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| Online Access: | http://hdl.handle.net/1721.1/112305 https://orcid.org/0000-0002-2937-4810 https://orcid.org/0000-0002-6930-8068 https://orcid.org/0000-0003-0124-8545 https://orcid.org/0000-0003-1521-5365 https://orcid.org/0000-0002-9786-0538 |
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| author | Hu, Jiazhong Urvoy, Alban Joseph Vendeiro, Zachary Michael Crepel, Valentin Didier Chen, Wenlan Vuletic, Vladan |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Hu, Jiazhong Urvoy, Alban Joseph Vendeiro, Zachary Michael Crepel, Valentin Didier Chen, Wenlan Vuletic, Vladan |
| author_sort | Hu, Jiazhong |
| collection | MIT |
| description | Protocols for attaining quantum degeneracy in atomic gases almost exclusively rely on evaporative cooling, a time-consuming final step associated with substantial atom loss. We demonstrate direct laser cooling of a gas of rubidium-87 (⁸⁷Rb) atoms to quantum degeneracy. The method is fast and induces little atom loss. The atoms are trapped in a two-dimensional optical lattice that enables cycles of compression to increase the density, followed by Raman sideband cooling to decrease the temperature. From a starting number of 2000 atoms, 1400 atoms reach quantum degeneracy in 300 milliseconds, as confirmed by a bimodal velocity distribution. The method should be broadly applicable to many bosonic and fermionic species and to systems where evaporative cooling is not possible. |
| first_indexed | 2024-09-23T10:50:39Z |
| format | Article |
| id | mit-1721.1/112305 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:50:39Z |
| publishDate | 2017 |
| publisher | American Association for the Advancement of Science (AAAS) |
| record_format | dspace |
| spelling | mit-1721.1/1123052022-09-30T23:26:18Z Creation of a Bose-condensed gas of ⁸⁷Rb by laser cooling Hu, Jiazhong Urvoy, Alban Joseph Vendeiro, Zachary Michael Crepel, Valentin Didier Chen, Wenlan Vuletic, Vladan Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Research Laboratory of Electronics Hu, Jiazhong Urvoy, Alban Joseph Vendeiro, Zachary Michael Crepel, Valentin Didier Chen, Wenlan Vuletic, Vladan Protocols for attaining quantum degeneracy in atomic gases almost exclusively rely on evaporative cooling, a time-consuming final step associated with substantial atom loss. We demonstrate direct laser cooling of a gas of rubidium-87 (⁸⁷Rb) atoms to quantum degeneracy. The method is fast and induces little atom loss. The atoms are trapped in a two-dimensional optical lattice that enables cycles of compression to increase the density, followed by Raman sideband cooling to decrease the temperature. From a starting number of 2000 atoms, 1400 atoms reach quantum degeneracy in 300 milliseconds, as confirmed by a bimodal velocity distribution. The method should be broadly applicable to many bosonic and fermionic species and to systems where evaporative cooling is not possible. 2017-11-28T18:39:16Z 2017-11-28T18:39:16Z 2017-11 2017-05 Article http://purl.org/eprint/type/JournalArticle 0036-8075 1095-9203 http://hdl.handle.net/1721.1/112305 Hu, Jiazhong et al. “Creation of a Bose-condensed gas of ⁸⁷Rb by laser cooling.” Science 358, 6366 (November 2017): 1078–1080 © The Author(s), some rights reserved; exclusive licensee American Association for the Advancement of Science (AAAS) https://orcid.org/0000-0002-2937-4810 https://orcid.org/0000-0002-6930-8068 https://orcid.org/0000-0003-0124-8545 https://orcid.org/0000-0003-1521-5365 https://orcid.org/0000-0002-9786-0538 en_US http://dx.doi.org/10.1126/science.aan5614 Science 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 Association for the Advancement of Science (AAAS) Jiazhong Hu |
| spellingShingle | Hu, Jiazhong Urvoy, Alban Joseph Vendeiro, Zachary Michael Crepel, Valentin Didier Chen, Wenlan Vuletic, Vladan Creation of a Bose-condensed gas of ⁸⁷Rb by laser cooling |
| title | Creation of a Bose-condensed gas of ⁸⁷Rb by laser cooling |
| title_full | Creation of a Bose-condensed gas of ⁸⁷Rb by laser cooling |
| title_fullStr | Creation of a Bose-condensed gas of ⁸⁷Rb by laser cooling |
| title_full_unstemmed | Creation of a Bose-condensed gas of ⁸⁷Rb by laser cooling |
| title_short | Creation of a Bose-condensed gas of ⁸⁷Rb by laser cooling |
| title_sort | creation of a bose condensed gas of ⁸⁷rb by laser cooling |
| url | http://hdl.handle.net/1721.1/112305 https://orcid.org/0000-0002-2937-4810 https://orcid.org/0000-0002-6930-8068 https://orcid.org/0000-0003-0124-8545 https://orcid.org/0000-0003-1521-5365 https://orcid.org/0000-0002-9786-0538 |
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