Universal Dynamical Control of Open Quantum Systems
Figure 20
Cooling and heating of a TLS by minimization (left: (a), (b), (c)) and maximization (right: (g), (h), (i)) of the change of linear entropy for a given bath spectrum (, red) with denoting , , and components. The optimized system spectra (, green) are shown for an energy constraint (left) and (right) as contrasted to the unmodulated Hamiltonian (i.e., for , , , , , . All graphs are individually scaled to 1 with respect to their maximum value, and scaling of is the same as in Figure 18 (color online).