  Integrating atomic quantum memories based on color centers in diamond with
on-chip photonic devices would enable entanglement distribution over long
distances. However, efforts towards integration have been challenging because
color centers can be highly sensitive to their environment, and their
properties degrade in nanofabricated structures. Here, we describe a
heterogeneously integrated, on-chip, III-V diamond platform designed for
neutral silicon vacancy (SiV0) centers in diamond that circumvents the need for
etching the diamond substrate. Through evanescent coupling to SiV0 centers near
the surface of diamond, the platform will enable Purcell enhancement of SiV0
emission and efficient frequency conversion to the telecommunication C-band.
The proposed structures can be realized with readily available fabrication
techniques.
