SUPERPOSITION STATES IN CAVITIES FED BY INJECTED ATOMS

We study the possibility of producing disentangled states in the Jayne s-Cummings model when the input field is a superposition of two Fock s tates, \M] and \M + 1], and the atom is initially in a superposition o f its two stationary states. In the case of large M, we show that Jayn es-Cummings interaction provides quantum state swapping between the tw o qubits (atom and field).