Laboratoire de Physique Théorique
Toulouse - UMR 5152

This theoretical work explores the accessibility of a multimode quantum interface between the modes of collective atomic motion and a single mode cavity field. First, the controlability of motion of an atomic array is demonstrated by cooling all the atoms to the ground state of the individual traps. Furthermore, I present an experimentally feasible scheme to squeeze the quantum noise of a collective atomic motion below the standard quantum limit. Counterintuitively, the more atoms are in the array the smaller is the quantum noise of the collective motion. The squeezing is achieved as a steady state of a dissipative dynamic inside a cavity pumped by two color coherent light.