Statistics and control of chaotic atomic transport in an optical standing-wave field
Centre-of-mass atomic motion in an optical lattice is
shown to be near the resonance a chaotic walking due to the interplay
between coherent internal
atomic dynamics and spontaneous emission. Statistical properties
of chaotic atomic motion can be controlled by the single parameter, the
detuning between the atomic transition frequency and
the laser frequency. We derive a Fokker-Planck equation in the energetic
space to describe the atomic transport near the resonance and
demonstrate numerically how to manipulate the atomic motion varying the
detuning.