Unitary cavity spin squeezing by quantum erasure
Deterministic light-induced spin squeezing in an atomic gas is limited by photon shot noise or, equivalently, by atomic state information escaping with the light field mediating the effective atom-atom interaction. We show theoretically that the performance of cavity spin squeezing [ M. H. Schleier-...
| Main Authors: | , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
American Physical Society (APS)
2012
|
| Online Access: | http://hdl.handle.net/1721.1/69565 https://orcid.org/0000-0002-5450-8809 https://orcid.org/0000-0002-9786-0538 |
| _version_ | 1811085680092119040 |
|---|---|
| author | Leroux, Ian Daniel Schleier-Smith, Monika Helene Zhang, Hao Vuletic, Vladan |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Leroux, Ian Daniel Schleier-Smith, Monika Helene Zhang, Hao Vuletic, Vladan |
| author_sort | Leroux, Ian Daniel |
| collection | MIT |
| description | Deterministic light-induced spin squeezing in an atomic gas is limited by photon shot noise or, equivalently, by atomic state information escaping with the light field mediating the effective atom-atom interaction. We show theoretically that the performance of cavity spin squeezing [ M. H. Schleier-Smith, I. D. Leroux and V. Vuletić Phys. Rev. A 81 021804 (2010)] can be substantially improved by erasing the light-atom entanglement, and propose several methods for doing so. Accounting for light scattering into free space, quantum erasure improves the scaling of cavity squeezing from S[superscript −1/2] to S[superscript −2/3], where S is the total atomic spin. |
| first_indexed | 2024-09-23T13:13:34Z |
| format | Article |
| id | mit-1721.1/69565 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:13:34Z |
| publishDate | 2012 |
| publisher | American Physical Society (APS) |
| record_format | dspace |
| spelling | mit-1721.1/695652022-09-28T12:45:53Z Unitary cavity spin squeezing by quantum erasure Leroux, Ian Daniel Schleier-Smith, Monika Helene Zhang, Hao Vuletic, Vladan Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Research Laboratory of Electronics MIT-Harvard Center for Ultracold Atoms Vuletic, Vladan Leroux, Ian Daniel Schleier-Smith, Monika Helene Zhang, Hao Vuletic, Vladan Deterministic light-induced spin squeezing in an atomic gas is limited by photon shot noise or, equivalently, by atomic state information escaping with the light field mediating the effective atom-atom interaction. We show theoretically that the performance of cavity spin squeezing [ M. H. Schleier-Smith, I. D. Leroux and V. Vuletić Phys. Rev. A 81 021804 (2010)] can be substantially improved by erasing the light-atom entanglement, and propose several methods for doing so. Accounting for light scattering into free space, quantum erasure improves the scaling of cavity squeezing from S[superscript −1/2] to S[superscript −2/3], where S is the total atomic spin. Natural Sciences and Engineering Research Council of Canada (NSERC) Hertz Foundation National Science Foundation (U.S.) United States. Defense Advanced Research Projects Agency United States. Army Research Office 2012-03-02T17:33:41Z 2012-03-02T17:33:41Z 2012-01 2011-08 Article http://purl.org/eprint/type/JournalArticle 1050-2947 1094-1622 http://hdl.handle.net/1721.1/69565 Leroux, Ian et al. “Unitary Cavity Spin Squeezing by Quantum Erasure.” Physical Review A 85.1 (2012): n. pag. Web. 2 Mar. 2012. © 2011 American Physical Society https://orcid.org/0000-0002-5450-8809 https://orcid.org/0000-0002-9786-0538 en_US http://dx.doi.org/10.1103/PhysRevA.85.013803 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) APS |
| spellingShingle | Leroux, Ian Daniel Schleier-Smith, Monika Helene Zhang, Hao Vuletic, Vladan Unitary cavity spin squeezing by quantum erasure |
| title | Unitary cavity spin squeezing by quantum erasure |
| title_full | Unitary cavity spin squeezing by quantum erasure |
| title_fullStr | Unitary cavity spin squeezing by quantum erasure |
| title_full_unstemmed | Unitary cavity spin squeezing by quantum erasure |
| title_short | Unitary cavity spin squeezing by quantum erasure |
| title_sort | unitary cavity spin squeezing by quantum erasure |
| url | http://hdl.handle.net/1721.1/69565 https://orcid.org/0000-0002-5450-8809 https://orcid.org/0000-0002-9786-0538 |
| work_keys_str_mv | AT lerouxiandaniel unitarycavityspinsqueezingbyquantumerasure AT schleiersmithmonikahelene unitarycavityspinsqueezingbyquantumerasure AT zhanghao unitarycavityspinsqueezingbyquantumerasure AT vuleticvladan unitarycavityspinsqueezingbyquantumerasure |