Since the pioneering works by Landau, Zener, Stückelberg, and Majorana (LZSM), it has
been known that driving a quantum two-level system results in tunneling between its states …

Open quantum systems (OQSs) cannot always be described with the Markov approximation,
which requires a large separation of system and environment time scales. An overview is …

Coupling with an external environment inevitably affects the dynamics of a quantum system.
Here, we consider how charging performances of a quantum battery, modelled as a two …

The time-dependent energy transfer in a driven quantum system strongly coupled to a heat
bath is studied within an influence functional approach. Exact formal expressions for the …

We review recent developments regarding the quantum dynamics and many-body physics
with light, in superconducting circuits and Josephson analogues, by analogy with atomic …

We consider superconducting circuits for the purpose of simulating the spin-boson model.
The spin-boson model consists of a single two-level system coupled to bosonic modes. In …

We show that the general and numerically exact Hierarchy of Pure States method (HOPS) is
very well applicable to calculate the reduced dynamics of an open quantum system. In …

We provide a detailed discussion about the unitary and reduced evolution induced by family
of Hamiltonian models describing a multilevel system, with a ground state and a possibly …

We establish the path integral approach for the time-dependent heat exchange of an
externally driven quantum system coupled to a thermal reservoir. We derive the relevant …

We develop a systematic variational coherent-state expansion for the many-body ground
state of the spin-boson model, in which a quantum two-level system is coupled to a …