Collective self-trapping of atoms in a cavityhttps://hdl.handle.net/21.15109/CONCORDA/9V5CHWDombi, AndrásClark, Thomas WilliamWilliams, Francis Ian BickfordJessen, FlorianFortágh, JózsefNagy, DávidVukics, AndrásDomokos, PéterARP2023-10-112023-10-11T07:30:45ZWe study experimentally the optical dipole trapping of a cloud of cold atoms in a high-finesse cavity in the parameter regime where the atomic back-action on the cavity mode is significant. Back-action based effects lead to state selective optical manipulation schemes. We identify a parameter range where the collective back action of the atoms is needed for the trapping, i.e. a single atom would not be trapped under the same laser drive conditions. The collective self-trapping is demonstrated by the observation of a significant increase of the trapping time as a function of the atom number. The atomic back action on the cavity field gives rise to a simultaneous real-time monitoring of the number of trapped atoms. This is used to show a non-exponential collapse of the atom trap.Physicsquantum opticscavity QEDself-trappingmany-body physicscold atomsEnglishDombi, A., et al. "Collective self-trapping of atoms in a cavity." New Journal of Physics 23.8 (2021): 083036., doi, 10.1088/1367-2630/ac1a3c, https://iopscience.iop.org/article/10.1088/1367-2630/ac1a3c2023-10-11Curko, Arpad2023-10-10CC BY 4.0