Coherence Times of Bose-Einstein Condensates beyond the Shot-Noise Limit via Superfluid Shielding
We demonstrate a new way to extend the coherence time of separated Bose-Einstein condensates that involves immersion into a superfluid bath. When both the system and the bath have similar scattering lengths, immersion in a superfluid bath cancels out inhomogeneous potentials either imposed by extern...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2017
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| Online Access: | http://hdl.handle.net/1721.1/107426 https://orcid.org/0000-0003-4126-083X https://orcid.org/0000-0002-6107-1174 https://orcid.org/0000-0002-6217-567X https://orcid.org/0000-0003-1521-5365 https://orcid.org/0000-0002-9528-3044 |
| _version_ | 1826192913194811392 |
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| author | Burton, William Cody Kennedy, Colin Chung, Woo Chang Vadia, Samarth Chen, Wenlan Ketterle, Wolfgang |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Burton, William Cody Kennedy, Colin Chung, Woo Chang Vadia, Samarth Chen, Wenlan Ketterle, Wolfgang |
| author_sort | Burton, William Cody |
| collection | MIT |
| description | We demonstrate a new way to extend the coherence time of separated Bose-Einstein condensates that involves immersion into a superfluid bath. When both the system and the bath have similar scattering lengths, immersion in a superfluid bath cancels out inhomogeneous potentials either imposed by external fields or inherent in density fluctuations due to atomic shot noise. This effect, which we call superfluid shielding, allows for coherence lifetimes beyond the projection noise limit. We probe the coherence between separated condensates in different sites of an optical lattice by monitoring the contrast and decay of Bloch oscillations. Our technique demonstrates a new way that interactions can improve the performance of quantum devices. |
| first_indexed | 2024-09-23T09:30:46Z |
| format | Article |
| id | mit-1721.1/107426 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T09:30:46Z |
| publishDate | 2017 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1074262022-09-30T14:58:07Z Coherence Times of Bose-Einstein Condensates beyond the Shot-Noise Limit via Superfluid Shielding Burton, William Cody Kennedy, Colin Chung, Woo Chang Vadia, Samarth Chen, Wenlan Ketterle, Wolfgang Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Research Laboratory of Electronics Burton, William Cody Kennedy, Colin Chung, Woo Chang Vadia, Samarth Chen, Wenlan Ketterle, Wolfgang We demonstrate a new way to extend the coherence time of separated Bose-Einstein condensates that involves immersion into a superfluid bath. When both the system and the bath have similar scattering lengths, immersion in a superfluid bath cancels out inhomogeneous potentials either imposed by external fields or inherent in density fluctuations due to atomic shot noise. This effect, which we call superfluid shielding, allows for coherence lifetimes beyond the projection noise limit. We probe the coherence between separated condensates in different sites of an optical lattice by monitoring the contrast and decay of Bloch oscillations. Our technique demonstrates a new way that interactions can improve the performance of quantum devices. Samsung Scholarship Foundation National Science Foundation (U.S.) (MIT-Harvard Center for Ultracold Atoms. Grant 1506369) United States. Air Force Office of Scientific Research. Multidisciplinary University Research Initiative (Grants FA9550-14-1-0035 and W911NF-14-1-0003) 2017-03-15T20:23:47Z 2017-03-15T20:23:47Z 2016-12 2016-10 2016-12-28T23:00:09Z Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/107426 Burton, William Cody et al. “Coherence Times of Bose-Einstein Condensates beyond the Shot-Noise Limit via Superfluid Shielding.” Physical Review Letters 117.27 (2016): n. pag. © 2016 American Physical Society https://orcid.org/0000-0003-4126-083X https://orcid.org/0000-0002-6107-1174 https://orcid.org/0000-0002-6217-567X https://orcid.org/0000-0003-1521-5365 https://orcid.org/0000-0002-9528-3044 en http://dx.doi.org/10.1103/PhysRevLett.117.275301 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 | Burton, William Cody Kennedy, Colin Chung, Woo Chang Vadia, Samarth Chen, Wenlan Ketterle, Wolfgang Coherence Times of Bose-Einstein Condensates beyond the Shot-Noise Limit via Superfluid Shielding |
| title | Coherence Times of Bose-Einstein Condensates beyond the Shot-Noise Limit via Superfluid Shielding |
| title_full | Coherence Times of Bose-Einstein Condensates beyond the Shot-Noise Limit via Superfluid Shielding |
| title_fullStr | Coherence Times of Bose-Einstein Condensates beyond the Shot-Noise Limit via Superfluid Shielding |
| title_full_unstemmed | Coherence Times of Bose-Einstein Condensates beyond the Shot-Noise Limit via Superfluid Shielding |
| title_short | Coherence Times of Bose-Einstein Condensates beyond the Shot-Noise Limit via Superfluid Shielding |
| title_sort | coherence times of bose einstein condensates beyond the shot noise limit via superfluid shielding |
| url | http://hdl.handle.net/1721.1/107426 https://orcid.org/0000-0003-4126-083X https://orcid.org/0000-0002-6107-1174 https://orcid.org/0000-0002-6217-567X https://orcid.org/0000-0003-1521-5365 https://orcid.org/0000-0002-9528-3044 |
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