Color centers in silicon are emerging as promising candidates for photonic quantum processors. Among these color centers, the T center’s long spin coherence and telecom-band optical transitions make it an attractive target for quantum repeater and memory applications. Due to the T center’s long optical lifetime, cavity enhancement is an important prerequisite to any practical implementation of quantum protocols. In this work, we demonstrate a silicon photonics platform enabling a high yield of strongly enhanced T centers from distinct cavities through a single bus waveguide. We use a novel technique to align cavity resonances with T centers, and demonstrate time-domain multiplexing of single photons emitted from two simultaneously-enhanced T centers. We observe strong bus waveguide-mediated interactions between cavities and emitters, paving the way to coherent interactions between spatially separated emitters.
Project is currently funded by: Federal