  Referring to a Fano-type model qualitative analogy we develop a comprehensive
basic mechanism for the laser control of the non-Markovian bath response in
strongly coupled Open Quantum Systems (OQS). A converged Hierarchy Equations Of
Motion (HEOM) is worked out to numerically solve the master equation of a
spin-boson Hamiltonian to reach the reduced electronic density matrix of a
heterojunction in the presence of strong THz laser pulses. Robust and efficient
control is achieved increasing by a factor ?2 non-Markovianity measured by the
time evolution of the volume of accessible states. The consequences of such
fields on the central system populations and coherence are examined, putting
the emphasis on the relation between the increase of non- Markovianity and the
slowing down of decoherence processes.
