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EnglishWe analyze the nonequilibrium dynamics of a gas of interacting photons in an array of coupled dissipative nonlinear cavities when driven by a pulsed external coherent field. Using a mean-field approach, we show that the response of the system is strongly sensitive to the underlying (equilibrium) quantum phase transition from a Mott insulator to a superfluid state at commensurate filling. We find that the coherence of the cavity emission after a quantum quench can be used to determine the phase diagram of an optical many-body system even in the presence of dissipation.
http://hdl.handle.net/11384/8191| Titolo: | Signatures of the superfluid-insulator phase transition in laser-driven dissipative nonlinear cavity arrays |
| Autori interni: | FAZIO, ROSARIO GIOVANNETTI, VITTORIO |
| Data di pubblicazione: | 2010 |
| Rivista: | PHYSICAL REVIEW A |
| Abstract: | We analyze the nonequilibrium dynamics of a gas of interacting photons in an array of coupled dissipative nonlinear cavities when driven by a pulsed external coherent field. Using a mean-field approach, we show that the response of the system is strongly sensitive to the underlying (equilibrium) quantum phase transition from a Mott insulator to a superfluid state at commensurate filling. We find that the coherence of the cavity emission after a quantum quench can be used to determine the phase diagram of an optical many-body system even in the presence of dissipation. |
| Handle: | http://hdl.handle.net/11384/8191 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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