Heating in Nanophotonic Traps for Cold Atoms

摘要: Laser-cooled atoms that are trapped and optically interfaced with light in nanophotonic waveguides a powerful platform for fundamental research quantum optics as well applications communication information processing. Ever since the first realization of such hybrid nanophotonic, heating rates atomic motion observed various experimental settings have typically been exceeding those comparable free-space optical microtraps by about three orders magnitude. This excessive is roadblock implementation certain protocols devices. Its origin has so far remained elusive and, at typical atom-surface separations less than an wavelength encountered traps, numerous effects may potentially contribute to atom heating. Here, we theoretically describe effect mechanical vibrations on guided fields provide general theory particle-phonon interaction traps. We test our applying it case laser-cooled cesium nanofiber-based two-color find excellent quantitative agreement between predicted experimentally measured values. Our predicts that, this setting, dominant process stems from optomechanical coupling continuum thermally occupied flexural modes waveguide structure. Beyond unraveling long-standing riddle also study dependence relevant system parameters. findings allow us propose several strategies minimizing Finally, highly optomechanics experiments dielectric nanoparticles close waveguides.