Spin Squeezing in presence of dissipative interactions

OSVALDO CIVITARESE,; MARTA REBOIRO,; LORENA REBON,; ALEJANDRO TIELAS, DIEGO

PHYSICS LETTERS A

Año: 2008 p. 1 - 1

0375-9601

The transfer of spin between an incoming radiation ¯eld and localized atomic spin-levels, for a chain of two-level atoms, is studied. The Hamiltonian of the system is modelled by a radiation term and by atom-atom and radiation-atom interactions. Dissipative e®ects are accounted for by including, as a perturbation, an atom-photon exchange-interaction of the exponential type and complex strength. It is found that the spin-squeezing is heavily suppressed by the dissipative term. Calculations are performed for arrays of rubidium atoms exposed to a Neon laser.