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Entanglement-assisted atomic clock beyond the projection noise limit
- Source :
- New J. Phys. 12 065032, 2010
- Publication Year :
- 2009
-
Abstract
- We use a quantum non-demolition measurement to generate a spin squeezed state and to create entanglement in a cloud of 10^5 cold cesium atoms, and for the first time operate an atomic clock improved by spin squeezing beyond the projection noise limit in a proof-of-principle experiment. For a clock-interrogation time of 10 \mu\s the experiments show an improvement of 1.1 dB in the signal-to-noise ratio, compared to the atomic projection noise limit.
- Subjects :
- Quantum Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- New J. Phys. 12 065032, 2010
- Publication Type :
- Report
- Accession number :
- edsarx.0912.3895
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1088/1367-2630/12/6/065032