Spin Squeezing in a S-1/2 Chain With Dissipative Interactions

D. TIELAS; L. REBON; M. REBOIRO; O. CIVITARESE

Paraty

Workshop; II Quantum Information School and Workshop Paraty 2009; 2009

UFRJ, UFF, UFMG

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.