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DY: Fachverband Dynamik und Statistische Physik
DY 52: Quantum Dynamics, Decoherence and Quantum Information
DY 52.7: Vortrag
Donnerstag, 19. März 2020, 16:45–17:00, HÜL 186
Dynamics of disordered dissipative spin-boson systems at strong coupling — Eliana Fiorelli1,2, Pietro Rotondo1,2, Federico Carollo1,2, •Matteo Marcuzzi1,2, and Igor Lesanovsky1,2,3 — 1School of Physics and Astronomy, University of Nottingham, Nottingham, NG7 2RD, UK — 2Centre for the Mathematics and Theoretical Physics of Quantum Non-equilibrium Systems, University of Nottingham, Nottingham NG7 2RD, UK — 3Institut fur Theoretische Physik, University of Tuebingen, Auf der Morgenstelle 14, 72076 Tuebingen, Germany
Spin-boson Hamiltonians are an effective description for numerous quantum many-body systems such as atoms coupled to cavity modes, quantum electrodynamics in circuits and trapped ion systems. While reaching strong light-matter couplings has become practicable, the understanding of the physics in this parameter regime remains a challenge. We investigate a particular example where sufficient amounts of dissipation and disorder over the local couplings make it possible to map the spin dynamics onto an effective classical master equation; the latter is, in turn, approximately governed by a fully-connected energy function, the Hopfield model, studied in the past as a simple model for an associative memory. We highlight similarities and differences in the stationary and dynamical properties of the two systems.