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Q: Quantenoptik

Q 48: Poster: Fallen und Kühlung

Q 48.11: Poster

Donnerstag, 27. März 2003, 16:30–18:30, Lichthof

Efficiency of single atom detection in an optical cavity — •T. Puppe, P. Maunz, I. Schuster, P.W.H. Pinkse, and G. Rempe — Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany

High-finesse cavities offer distinctive advantages for observation of a single atom: The presence of an single atom has been detected in about 10 microseconds [1], and even the motion of a single atom can be followed in real time [2]. Here we discuss the capability of such a detection method from experimental traces. We consider an empty cavity which is on resonance with a probe laser. The presence of an atom results in a dramatic decrease of the transmission. Therefore it is possible to deduce the presence of an atom nearly without scattering photons from the atom [3]. The efficiency of such an observation technique is analyzed in detail for single atoms stored in a far-detuned intracavity dipole trap.

[1] H. Mabuchi et al., Appl. Phys. B 68, 1095 (1999); P. Münstermann et al., Opt. Comm. 159 63 (1999).

[2] Horak et al. Phys. Rev. Lett. 88, 043601 (2002); C.J. Hood et al., Science 287, 1447 (2000); P.W.H. Pinkse et al., Nature 404, 365 (2000).

[3] P. Kwait et al., Phys. Rev. Lett. 74, 4763 (1995); M. Pavicic, Phys. Lett. A223, 245 (1996); A. Karlsson et al., Phys. Rev. Lett. 80, 1198 (1998)