Quantum dynamics of spatial decoherence of two atoms in a ring cavity
Zheng Li, Chui-Ping Yang, Franco Nori · Physical Review A · 2010
We study the spatial decoherence dynamics for the relative position of two atoms in a single-mode ring cavity. We find that the spatial decoherence of the two atoms depends strongly on their relative position. Taking into account the spatial degrees of freedom, we investigate the entanglement dynamics of the internal states of the two atoms. It is shown that the entanglement decays to almost zero in a finite time, and the disentanglement time depends on the width of the wave packets describing the atomic spatial distribution.