Frankfurt 2006 – scientific programme

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Q: Quantenoptik und Photonik

Q 53: Fallen und Kühlung II

Q 53.4: Talk

Wednesday, March 15, 2006, 15:15–15:30, HII

Blue light fields in strongly-coupled atom-cavity systems — •T. Puppe, I. Schuster, A. Grothe, J. Almer, K. Murr, P.W.H. Pinkse, and G. Rempe — Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, 85748 Garching

A fundamental system of matter-light interaction is realized by a single atom strongly coupled to the field mode of a small high-finesse cavity. The experimental study of quantum effects as well as the implementation of quantum information processing schemes requires a well-controlled atomic position to ensure persistent strong coupling. Cavity cooling proved capable of improving the axial localization of the atom [1], thereby compensating for inevitable heating in this setting due to cavity-mediated momentum diffusion [2].

We propose to implement blue-detuned laser fields in addition to a red intracavity dipole trap. The freedom gained in tailoring the position dependent Stark shift can be used to achieve effective guiding and detection of single atoms as well as strong localization in the trap. In addition, the blue fields allow to explore a new parameter regime which is compatible with cavity cooling in axial and radial directions.

[1] P. Maunz, T. Puppe, I. Schuster, N. Syassen, P.W.H. Pinkse, and G. Rempe, Nature 428, 50 (2004).

[2] K. Murr, P. Maunz, P.W.H. Pinkse, T. Puppe, I. Schuster, D. Vitali and G. Rempe arXiv/quant-ph 0512001 (2005).