1. School of Mathematics and Computer Science, Guizhou Normal University, Guiyang, 550001, P.R. China 2. Institute of Applied Physics and Computational Mathematics, P.O. Box 8009 (28), Beijing, 100088, P.R. China
Abstract:
We theoretically investigate the atomic energy band of ultracold atoms inside a laser-driven optical cavity with Kerr medium. This cavity-atom hybrid system has two kinds of interactions: photon-atom interaction and photon-photon one. We find the loops of the atomic energy band induced by photon-atom interaction disappear when the Kerr interaction between photons exceeds a critical value. The reason of the controllably atomic energy band loops by Kerr interaction is discussed.