Journal
PHYSICAL REVIEW A
Volume 91, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.91.033625
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Funding
- Strategic Priority Research Program of the Chinese Academy of Sciences (China) [XDB01030200]
- National Basic Research Program of China (China) [2011CBA00200]
- National Natural Science Foundation of China (China) [11274295, 11474271]
- Alfred P. Sloan Foundation
- Packard Foundation
- AFOSR-MURI (USA)
- ARO (USA)
- DARPA Quiness (USA) program
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The unconditional squeezing of the collective spins of an atomic ensemble in a laser driven optical cavity [I. D. Leroux, M. H. Schleier-Smith, and V. Vuletie, Phys. Rev. Lett 104, 073602 (2010)] is studied and analyzed theoretically. Surprisingly, we find that the largely detuned driving laser can improve the scaling of cavity squeezing from S-2/5 to S-2/3, where S is the total atomic spin. Moreover, we also demonstrate that the experimental imperfection of photon scattering into free space can be efficiently suppressed by detuning.
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