Mainz 2026 – scientific programme

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SYSB: Symposium Spin-Boson Models

SYSB 1: Spin-boson models

SYSB 1.3: Invited Talk

Tuesday, March 3, 2026, 12:00–12:30, RW 1

Spin-boson models under strong ac-driving — •Milena Grifoni — University of Regensburg

Quantum two-level systems interacting with the surroundings are ubiquitous in nature. The coupling suppresses quantum coherence and forces the system towards a steady state. Such dissipative processes are captured by the paradigmatic spin-boson model, describing a two-state particle, the "spin", interacting with an environment formed by harmonic oscillators. I will discuss to what extent intense coherent driving impacts the dynamical and stationary properties of the strongly driven spin-boson model, in the case of Ohmic dissipation and for a structured bath. Theoretical predictions will be benchmarked to experiments with platforms based on superconducting qubits coupled to an electromagnetic environment. These results advance fundamental understanding of open quantum systems and bear potential for the design of entangled light-matter states.

Keywords: Spin-boson model; intense ac-driving; light-matter interaction; superconducting qubits