atomic squeezing in three level atoms

OSVALDO CIVITARESE; M.REBOIRO,

PHYSICS LETTERS A

Año: 2006 vol. 357 p. 224 - 224

0375-9601

The conditions under which squeezing occurs, in a system of atomsand photons, are modelled by describing atom-photon interactionsin three atomic levels. The time evolution of the spin populationis calculated for different initial conditions. The effect of theuse of coherent states, in the photon sector of the initialcondition, is discussed. It is found that i) the use of coherentstates does not suffice for the transfer of spin between the atomsand the laser field, ii) the interactions between the atomiclevels and the radiation field must be non-symmetric, and iii)that the squeezing is washed-out if the number of atoms isincreased.