Achieving an ultra-slowly propagating maximally entangled state of two light beams via four-wave mixing in a double-Lambda system

摘要

We propose a scheme via four-wave mixing in a double-A system to generate a maximally entangled state of two light beams (the probe laser beam and the four-waving mixing beam), which propagates with ultraslow group velocity. It appears to be the first scheme to achieve an ultra-slowly propagating maximally entangled state of lights.