J. Phys. II France
Volume 7, Numéro 12, December 1997
Page(s) 1753 - 1760
DOI: 10.1051/jp2:1997106
J. Phys. II France 7 (1997) 1753-1760

Superposition States in Cavities Fed by Injected Atoms

Paulina Marian1 and Tudor A. Marian2

1  Laboratory of Physics, Department of Chemistry, University of Bucharest, Boulevard Carol I 13, R-70346 Bucharest, Romania
2  Department of Physics, University of Bucharest, P.O.Box MG-11, R-76900 Bucharest-Magurele, Romania

(Received 7 April 1997, revised 21 August 1997, accepted 12 September 1997)

We study the possibility of producing disentangled states in the Jaynes-Cummings model when the input field is a superposition of two Fock states, $\vert{\rm M}\rangle$ and $\vert{\rm M}+ 1\rangle$, and the atom is initially in a superposition of its two stationary states. In the case of large M, we show that Jaynes-Cummings interaction provides quantum state swapping between the two qubits (atom and field).

© Les Editions de Physique 1997