Quantum dynamical maps provide suitable mathematical representation of quantum
evolutions. When representing quantum states by density operators, the evident …

We theoretically study a simple non-equilibrium quantum network whose dynamics can be
expressed and exactly solved in terms of a time-local master equation. Specifically, we …

We consider a metrology scenario in which qubit-like probes are used to sense an external
field that affects their energy splitting in a linear fashion. Following the frequency estimation …

The quantum speed limit (QSL) sets a bound on the minimum time required for a quantum
system to evolve between two states. For open quantum systems this quantity depends on …

Phase covariant qubit dynamics describes an evolution of a two-level system under
simultaneous action of pure dephasing, energy dissipation, and energy gain with time …

The quantum master equation is a widespread approach to describing open quantum
system dynamics. In this approach, the effect of the environment on the system evolution is …

Non-Markovian effects can speed up the dynamics of quantum systems while the limits of
the evolution time can be derived by quantifiers of quantum statistical speed. We introduce a …

The quantum speed of evolution for the phase covariant map is investigated. This involves
absorption, emission, and dephasing processes. The maps under various combinations of …

An evolution of a two-level system (qubit) interacting with a single-photon wave packet is
analyzed. It is shown that a hierarchy of master equations gives rise to phase covariant qubit …

The quantum speed limit (QSL) is the theoretical lower limit of the time for a quantum system
to evolve from a given state to another one. Interestingly, it has been shown that non …