Figure 1
APS/C. Muschik

Figure 1: (Top) In conventional time evolution of quantum systems, different input states |ψin〉 lead to different output states |ψout〉 if a unitary operation U is applied. (Bottom) Quantum state preparation by reservoir engineering takes a different approach. If the interaction of the system with a bath is engineered such that |ψfin〉 is the unique steady state of the dissipative process, then the system is driven into this state irrespective of the initial state initiating the evolution paths ρ1, ρ2, etc.