Spin squeezing in the presence of dissipation

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

PHYSICS LETTERS A

ELSEVIER SCIENCE BV

Año: 2009 vol. 373 p. 754 - 758

0375-9601

The transfer of spin between photons and localized atomic 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. Effects due to dissipation are accounted for by atom-photon exchange-interactions of complex strength. It is found that the spin-squeezing is suppressed by dissipation. Calculations are performed for arrays of Rb atoms excited by a GaAlAs laser.