We show that two uncorrelated two-level atoms can become maximally entangled if they are both off-resonantly coupled to a dissipative cavity mode, initially in the vacuum state, and strongly driven by a resonant coherent field. For moderate atom-field detuning we find that the quantum correlations in the tripartite system can alternatively concentrate either in the atom-atom subsystem or in the two atom-field subsystems. In the first case Bell states as well as their superpositions are generated for low enough cavity decay rates. In a dispersive coupling regime the atomic entanglement grows up monotonically to the maximum value where it remains nearly stationary without being affected by cavity dissipation.
|Titolo:||Atomic Bell states generation in an open driven cavity QED system|
|Autori interni:||CASAGRANDE, FEDERICO|
|Settore Scientifico Disciplinare:||Settore FIS/03 - Fisica della Materia|
|Data di pubblicazione:||2008|
|Digital Object Identifier (DOI):||10.1140/epjst/e2008-00710-3|
|Appare nelle tipologie:||01 - Articolo su periodico|