Squeezing the collective spin of a dilute atomic ensemble by cavity feedback
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We propose and analyze a simple method to squeeze dynamically and unconditionally the collective spin of a dilute atomic ensemble by interaction with a driven mode of an optical resonator, as recently demonstrated [I. D. Leroux, M. H. Schleier-Smith, and V. Vuletić, Phys. Rev. Lett. 104, 073602 (2010)]. We show that substantial squeezing can be achieved in the regime of strong collective ensemble-resonator coupling. The squeezing is ultimately limited either by photon emission into free space or by the curvature of the Bloch sphere. We derive both limits and show where each prevails.
Date issued
2010-02Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Research Laboratory of Electronics; MIT-Harvard Center for Ultracold AtomsJournal
Physical Review A
Publisher
American Physical Society
Citation
Schleier-Smith, Monika H., Ian D. Leroux, and Vladan Vuletić. “Squeezing the collective spin of a dilute atomic ensemble by cavity feedback.” Physical Review A 81.2 (2010): 021804. © 2010 The American Physical Society
Version: Final published version
ISSN
1050-2947
1094-1622