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05.50.+a Quantum information & adaptive learning and feedback control

Feedback Cooling of a Single Neutral Atom

Wed, 2011-10-05 14:32 - Donatella Rosetti
Date: 
2010-10-21
Author(s): 

M. Koch, C. Sames, A. Kubanek, M. Apel, M. Balbach, A. Ourjoumtsev, P.W.H. Pinkse, G. Rempe

Reference: 

Physical Review Letters 105, 173003 (2010)
doi: 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  μK. 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 1 s regime, 30 times longer than without feedback.

Feedback Cooling of a Single Neutral Atom

Mon, 2010-11-22 15:57 - Donatella Rosetti
Date: 
2010-10-15
Reference: 

M. Koch, C. Sames, A. Kubanek, M. Apel, M. Balbach, a. ourjoumtsev, Pepijn W.H. Pinkse and G. Rempe
Phys. Rev. Letter (2010), in press
http://arxiv.org/abs/1007.1884v2

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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