104 citations · 273 across the 5 of their papers we have counts for
5 papers
Qubit-oscillator system under ultrastrong coupling and extreme driving
Johannes Hausinger, Milena Grifoni
We introduce an approach to studying a driven qubit-oscillator system in the ultrastrong coupling regime, where the ratio between coupling strength and oscillator frequency a…
Qubit-oscillator system: An analytical treatment of the ultra-strong coupling regime
Johannes Hausinger, Milena Grifoni
We examine a two-level system coupled to a quantum oscillator, typically representing experiments in cavity and circuit quantum electrodynamics. We show how such a system can be tr…
The dissipative two-level system under strong ac-driving: a combination of Floquet and Van Vleck perturbation theory
Johannes Hausinger, Milena Grifoni
We study the dissipative dynamics of a two-level system (TLS) exposed to strong ac driving. By combing Floquet theory with Van Vleck perturbation theory in the TLS tunneling matrix…
Dissipative dynamics of a qubit coupled to a nonlinear oscillator
Carmen Vierheilig, Johannes Hausinger, Milena Grifoni
We consider the dissipative dynamics of a qubit coupled to a nonlinear oscillator (NO) embedded in an Ohmic environment. By treating the nonlinearity up to first order and applying…
Dissipative dynamics of a biased qubit coupled to a harmonic oscillator: Analytical results beyond the rotating wave approximation
Johannes Hausinger, Milena Grifoni
We study the dissipative dynamics of a biased two-level system (TLS) coupled to a harmonic oscillator (HO), the latter interacting with an Ohmic environment. Using Van-Vleck pertur…