YQI Seminar - Anja Metelmann - F.U. Berlin

Event time: 
Wednesday, February 19, 2020 - 1:00pm to 2:00pm
YQI Seminar Room See map
Event description: 
Interplay of Dissipative and Coherent Processes in Engineered Quantum Systems
The concept of dissipation engineering has enriched the methods available for state preparation, dissipative quantum computing and quantum information processing. Combining such engineered dissipative processes with coherent dynamics allows for new effects to emerge. For example, we found that any factorisable (coherent) Hamiltonian interaction can be rendered nonreciprocal if balanced with the corresponding dissipative interaction. This powerful concept can be exploited to engineer nonreciprocal devices for quantum information processing, computation and communication protocols, e.g., to achieve control over the direction of propagation of photonic signals. In this talk I will introduce the basic concept and show that the dissipative process by itself can yield a purely unitary evolution on one subsystem.