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Journal Article

Feedback on the motion of a single atom in an optical cavity

MPS-Authors
http://pubman.mpdl.mpg.de/cone/persons/resource/persons60309

Fischer,  T.
Quantum Dynamics, Max Planck Institute of Quantum Optics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons60339

Maunz,  P.
Quantum Dynamics, Max Planck Institute of Quantum Optics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons60350

Pinkse,  P. W. H.
Quantum Dynamics, Max Planck Institute of Quantum Optics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons60353

Puppe,  T.
Quantum Dynamics, Max Planck Institute of Quantum Optics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons60356

Rempe,  G.
Quantum Dynamics, Max Planck Institute of Quantum Optics, Max Planck Society;

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Citation

Fischer, T., Maunz, P., Pinkse, P. W. H., Puppe, T., & Rempe, G. (2002). Feedback on the motion of a single atom in an optical cavity. Physical Review Letters, 88(16): 163002. 163002. Retrieved from http://link.aps.org/abstract/PRL/v88/e163002.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000F-C225-A
Abstract
We demonstrate feedback on the motion of a single neutral atom trapped in the light field of a high-finesse cavity. Information on the atomic motion is obtained from the transmittance of the cavity. This is used to implement a feedback loop in analog electronics that influences the atom's motion by controlling the optical dipole force exerted by the same light that is used to observe the atom. In spite of intrinsic limitations, the time the atom stays within the cavity could be extended by almost 30% beyond that of a comparable constant-intensity dipole trap.