  I present an approach to calculate the finite-frequency quantum noise in
systems strongly coupled to structured reservoirs based on the Markovian
embedding. This technique consists of mapping of the non-Markovian dynamics of
the original system onto the Markovian dynamics of the extended supersystem.
The applicability of this method is demonstrated on a single electronic level
coupled to a reservoir with an energy-dependent density of states. This model
can be mapped onto an equivalent double-level system whose dynamics is governed
by an exact Markovian master equation. It is demonstrated that the presented
approach provides a way to describe genuinely quantum effects, such as the
asymmetry of the absorption and the emission noise, as well as to deal with
non-Markovian effects and intra-system interactions on equal footing.
