Orateur
Description
Lattices of coupled nonlinear optical cavities are attracting a considerable interest for the possibility of creating novel correlated phases of light [1]. When interacting quantum systems are driven out of equilibrium, the competition between coherent effects and losses in the master equation [2] can lead to dissipative phase transitions in the thermodynamic limit. Here, we investigate the driven-dissipative Bose-Hubbard model describing photonic lattice systems in the regime of interactions which is relevant for semiconductor polaritonic systems. In 2D lattices the system exhibits a critical slowing down of the dynamics for increasing lattice size in the region of parameters where mean-field theory predicts non-linear bistability [3]. Our investigation of the role of disorder [4] shows which critical features survive in finite size systems.
[1] I. Carusotto, C. Ciuti, Quantum fluids of light, Rev. Mod. Phys. 85, 299-266 (2013).
[2] H. P. Breuer and F. Petruccione, The Theory of Open Quantum Systems (Oxford University Press, Oxford, 2007).
[3] F. Vicentini, F. Minganti, R. Rota, G. Orso and C. Ciuti, Critical slowing down in driven-dissipative Bose-Hubbard lattices, Phys. Rev. A 97, 013853 (2018).
[4] F. Vicentini, F. Minganti, A. Biella, G. Orso and C. Ciuti, Optimal stochastic unraveling of disordered open quantum systems: Application to driven-dissipative photonic lattices, Phys. Rev. A 99, 032115 (2019)
| Choix de session parallèle | 2.3 Fluides quantiques et lumière |
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