Collection efficiency of optical photons generated from microwave excitations of a Bose-Einstein condensate

Stimulated Raman scattering on A atoms is a promising tool for generating optical photons from a microwave excitation in the ground-state hyperfine manifold. We consider an atomic Bose-Einstein condensate coupled to a microwave field that scatters photons into the guided modes of a nearby optical fiber. Due to momentum transfer to the condensate, stimulated photon scattering can occur outside of the phase-matched direction, which can be used to separate the converted photons from the strong Raman readout pulse. Conversely, in the phase-matched direction, superradiant scattering due to bosonic enhancement leads to an increased collection efficiency in the guided modes of the fiber, for which we determine optimal conditions.

Automated summary

Stimulated Raman scattering on A atoms is explored to generate optical photons in a microwave excitation. By coupling an atomic Bose-Einstein condensate to a microwave field, the photons can be scattered into the guided modes of a nearby optical fiber. The study investigates the possibility of using momentum transfer to separate the converted photons from the Raman readout pulse, as well as achieving superradiant scattering for increased collection efficiency in the fiber's guided modes.