期刊
PHYSICAL REVIEW LETTERS
卷 110, 期 12, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.110.120402
关键词
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资金
- NSF
- CUA
- DARPA
- ARO MURI
- Packard
- Harvard Quantum Optics Center
- FAS Science Division Research Computing Group at Harvard University
- Direct For Mathematical & Physical Scien
- Division Of Physics [1125846, 969816, 1205554] Funding Source: National Science Foundation
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. DOI: 10.1103/PhysRevLett.110.120402
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