Improved storage of coherent and squeezed states in imperfect ring cavity

摘要

We propose new method of an improving quality of a ring cavity which is imperfect due to non-unit mirror reflectivity. The method is based on using squeezed states of light pulses illuminating the mirror and gradual homodyne detection of a radiation escaping from the cavity. Using measured data we can improve the state leaving the cavity by a single displacement and single squeezing operation performed. We discuss contribution of this method in process of storing unknown coherent and known squeezed state and generation of squeezing in the optical ring cavities.