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Abstract:
We have proposed and experimentally demonstrated a new technique for creating spin squeezed states of distant atoms by their common interaction with a driven resonator mode. Using this technique we achieve the largest spin squeezing to date, 5.6dB of improvement in signal-to-noise ratio over the standard quantum limit. We have demonstrated a squeezed atomic clock that reaches a given precision a factor of 2.8 faster than a clock operating at the standard quantum limit. Furthermore we have experimentally demonstrated that an atom-optics kicked rotor can remove the interference signal due to chosen interferometer paths in a four-pulse atom interferometer. The interferometer output is dominated by two degenerate spatial loops: the nonreciprocal trapezoid loop and the reciprocal figure-8 loop. By applying the kicked rotor sequence at a particular time we suppressed the contribution of the trapezoid loop to the interferometer signal while preserving the contribution due to the figure-8 loop. We have also demonstrated a robust macro-chip as a guide for stationary interferometer and investigated the properties of such interferometer.
| Limitations: |
 APPROVED FOR PUBLIC RELEASE |
| Description: |
Final rept. 15 Aug 2007-14 Feb 2010 |
| Pages: |
28 |
| Report Date: |
Jun 2010 |
| Contract Number: |
W911NF-07-1-0496 W911NF0710496 |
| Report Number: |
A110435 |
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