Remote control of quantum characteristics for the non-local two atom system with the two-photon J-C model

By considering the resonant interactions between one of two-level atoms in entangled state with a single mode and double-photon cavity field, and with the help of the evolution of cavity QED, the photon detection for cavity field is carried out. Through controlling the interaction time and the parameters of light fields as well as the entanglement degree of two entangled atoms in the initial state, the stronger non-classical effects of the atoms outside the cavity, such as atomic dipole squeezing phenomenon, are controlled. Simultaneously, using the same method, the entanglement evolution between two atoms as the channel of the long-distance controlling is also controlled. Thus, the control of quantum characteristics for two-atom system is achieved effectively. And the relation of entanglement and squeezing is found. (authors)