Feedback Cooling of a Single Neutral Atom

Details Feedback Cooling of a Single Neutral Atom Feedback Cooling of a Single Neutral Atom

2010-07-12

arxiv.org/abs/1007.1884v2

Phys. Rev. Lett. 105, 173003 (2010)

Physics

Quantum Physics

5 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.105.173003

We demonstrate feedback cooling of the motion of a single rubidium atom trapped in a high-finesse optical resonator to a temperature of about 160 \mu K. Time-dependent transmission and intensity-correlation measurements prove the reduction of the atomic position uncertainty. The feedback increases the 1/e storage time into the one second regime, 30 times longer than without feedback. Feedback cooling therefore rivals state-of-the-art laser cooling, but with the advantages that it requires less optical access and exhibits less optical pumping.

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