Open AccessEnhanced atom capturing in a high-Q cavity by help of several transverse modes
Author(s) -
Thomas Salzburger,
P. Domokos,
Helmut Ritsch
Publication year - 2002
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.10.001204
Subject(s) - physics , atom (system on chip) , degenerate energy levels , atomic physics , transverse plane , optics , optical cavity , field (mathematics) , photon , molecular physics , laser , quantum mechanics , mathematics , structural engineering , computer science , pure mathematics , engineering , embedded system
We predict a strong enhancement of the capture rate and the friction force for atoms crossing a driven high-Q cavity field if several near degenerate cavity modes are simultaneously coupled to the atom. In contrast to the case of a single TEM00 mode, circular orbits are not stable and damping of the angular and radial motion occurs. Depending on the chosen atom-field detuning the atoms phase lock the cavity modes to create a localized field minimum or maximum at their current positions. This corresponds to a local potential minimum, which the atom drags along with its motion. The stimulated photon redistribution between the modes then creates a large friction force. The effect is further enhanced if the atom is directly driven by a coherent field from the side. Several atoms in the field interact via the cavity modes, which leads to a strongly correlated motion.