Séminaire du LPTMS: Nicola Bartolo & Mathieu Hemery

Exact results for non-equilibrium phase transitions

Nicola Bartolo (Laboratoire Matériaux et Phénomènes Quantiques, Université Paris Diderot et CNRS)

In out-of-equilibrium systems, the competition between Hamiltonian evolution and dissipation can result in dissipative phase transitions. We investigate this kind of phenomena in the steady state of a general class of driven-dissipative systems, consisting of a nonlinear Kerr resonator in the presence of both coherent (one-photon) and parametric (two-photon) driving and dissipation.
We analytically derive the exact steady-state solution via the formalism of the complex P-representation. The exact solution applies to any photon density regime, allowing to investigate the thermodynamic limit of large photon densities. In this regime, we point out and characterise the emergence of dissipative phase transitions of both first and second order.

Mathieu Hemery (McGill University, Montréal, Canada)

Date/Time : 13/02/2018 - 11:00 - 12:00

Location : LPTMS, salle 201, 2ème étage, Bât 100, Campus d'Orsay

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