Engineering Atomic Quantum Reservoirs for Photons

Understand

We present protocols for creating entangled states of two modes of the electromagnetic field, by using a beam of atoms crossing microwave resonators.

• The atoms are driven by a transverse, classical field and pump correlated photons into (i) two modes of a cavity and (ii) the modes of two distant cavities.
• The protocols are based on a stochastic dynamics, characterized by random arrival times of the atoms and by random interaction times between atoms and cavity modes.
• The resulting effective model yields a master equation, whose steady state is an entangled state of the cavity modes.