Monitoring atom-atom entanglement and decoherence in a solvable tripartite open system in cavity QED
Articolo
Data di Pubblicazione:
2008
Citazione:
Monitoring atom-atom entanglement and decoherence in a solvable tripartite open system in cavity QED / M. Bina, F. Casagrande, A. Lulli, E. Solano. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - 77:3(2008), pp. 033839-1-033839-12.
Abstract:
We present a fully analytical solution of the dynamics of two strongly driven atoms resonantly coupled to a dissipative cavity field mode. We show that an initial atom-atom entanglement cannot be increased. In fact, the atomic Hilbert space divides into two subspaces, one of which is decoherence free so that the initial atomic entanglement remains available for applications, even in presence of a low enough atomic decay rate. In the other subspace a measure of entanglement, decoherence, and also purity, are described by a similar functional behavior that can be monitored by joint atomic measurements. Furthermore, we show the possible generation of Schrodinger- cat- like states for the whole system in the transient regime, as well as of entanglement for the cavity field and the atom-atom subsystems conditioned by measurements on the complementary subsystem.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
QUANTUM ELECTRODYNAMICS ; GENERATION ; COHERENCE ; PHOTONS ; BITS
Elenco autori:
M. Bina, F. Casagrande, A. Lulli, E. Solano
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