Quantum Analysis of Rydberg Atom Cavity Detector for Dark Matter Axion   Search
  Quantum analysis is made on the dynamical system consisting of the cosmic axions, photons and Rydberg atoms which are interacting in the resonant cavity. The atomic motion in a continuous incident beam is taken into account properly in order to make a precise estimate of the efficiency of the Rydberg atom cavity detector for dark matter axion search. 
K. Yamamoto and S. Matsuki