  Recent advances in the preparation, control and measurement of atomic gases
have led to new insights into the quantum world and unprecedented metrological
sensitivities, e.g. in measuring gravitational forces and magnetic fields. The
full potential of applying such capabilities to areas as diverse as biomedical
imaging, non-invasive underground mapping, and GPS-free navigation can only be
realised with the scalable production of efficient, robust and portable
devices. Here we introduce additive manufacturing as a production technique of
quantum device components with unrivalled design freedom, providing a step
change in efficiency, compactness and facilitating systems integration. As a
demonstrator we present a compact ultracold atom source using less than ten
milliwatts power to produce large samples of cold rubidium gases in an
ultrahigh vacuum environment. This disruptive technology opens the door to
drastically improved integrated structures, which will further reduce power
consumption, size and assembly complexity in scalable series manufacture of
bespoke quantum devices.
