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Dissipative Preparation of Spin Squeezed Atomic Ensembles in a Steady State

Author(s)
Dalla Torre, Emanuele G.; Otterbach, Johannes; Demler, Eugene; Vuletic, Vladan; Lukin, Mikhail D.
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Abstract
We present and analyze a new approach for the generation of atomic spin-squeezed states. Our method involves the collective coupling of an atomic ensemble to a decaying mode of an open optical cavity. We demonstrate the existence of a collective atomic dark state, decoupled from the radiation field. By explicitly constructing this state we find that it can feature spin squeezing bounded only by the Heisenberg limit. We show that such dark states can be deterministically prepared via dissipative means, thus turning dissipation into a resource for entanglement. The scaling of the phase sensitivity taking realistic imperfections into account is discussed.
Date issued
2013-03
URI
http://hdl.handle.net/1721.1/81217
Department
Massachusetts Institute of Technology. Department of Physics
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Dalla Torre, Emanuele G., Johannes Otterbach, Eugene Demler, Vladan Vuletic, and Mikhail D. Lukin. Dissipative Preparation of Spin Squeezed Atomic Ensembles in a Steady State. Physical Review Letters 110, no. 12 (March 2013).© 2013 American Physical Society.
Version: Final published version
ISSN
0031-9007
1079-7114

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