Feedback on the Motion of a Single Atom in an Optical Cavity

T. Fischer, P. Maunz, P. W.H. Pinkse, T. Puppe, G. Rempe

Research output: Contribution to journalArticleAcademicpeer-review

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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 [Formula presented] beyond that of a comparable constant-intensity dipole trap.

Original languageEnglish
Number of pages1
JournalPhysical review letters
Issue number16
Publication statusPublished - 1 Jan 2002
Externally publishedYes


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