  The controlled creation of quantum emitters in diamond represents a major
research effort in the fabrication of single-photon devices. Here, we present
the scalable production of silicon-vacancy (SiV) color centers in
single-crystal diamond by ion implantation. The lateral position of the SiV is
spatially controlled by a 1-$\mu$m pinhole placed in front of the sample, which
can be moved nanometer precise using a piezo stage. The initial implantation
position is controlled by monitoring the ion beam position with a camera.
Hereby, silicon ions are implanted at the desired spots in an area comparable
to the diffraction limit. We discuss the role of ions scattered by the pinhole
and the activation yield of the SiV color centers for the creation of single
quantum emitters.
