Data from: A chip-scale atomic beam for non-classical light

Non-classical light is a critical resource for a broad range of quantum
technologies and fundamental science. However, leading platforms such as
laser-cooled atoms and solid-state systems both present substantial
challenges to scalability due to complexity and spectral drift. Here, we
demonstrate a hybrid approach using a chip-scale rubidium beam coupled to
a high finesse cavity-QED system. Specifically, we generate non-classical
light and observe optical nonlinearities at the few photon level. This is
achieved without degradation of the cavity-QED system. By demonstrating
the compatibility of these two technologies, we open a path for
distributed sources of non-classical light and set the stage for using
cavity-QED to enhance the performance of chip-scale magnetometers and
atomic clocks.