Flying and stationary qubits – a cascaded systems approach

by Prof. Klaus Mølmer (Niels Bohr Institute)

Thursday 12 Jun 2025, 15:15 → 16:15 Europe/Stockholm

With the scaling of quantum technologies to many separate material quantum components, we may have recourse to couple these systems by quantum radiation of light, microwaves or phonons. In future optical quantum processors, we may, conversely, need to manipulate the quantum states of radiation pulses by their interaction with non-linear stationary quantum components. Several physical processes have been proposed and already demonstrated for these tasks. There are, however, rather fundamental obstacles to the treatment of propagation of radiation in circuits for quantum computing. These obstacles include the general multimode character of propagating fields and the duration and spatial extent of useful light and microwave pulses. The talk will review recent developments of a cascaded master equation approach to deal theoretically with these obstacles, and it will present examples of new, unforeseen, possibilities  for easy preparation and manipulation “on the fly” of quantum states of light and matter.

 

About the speaker:  See: <https://en.wikipedia.org/wiki/Klaus_Mølmer>