The ability to deterministically interact single photons with long-lived quantum memories is a core requirement to achieve large-scale quantum networks. The SiV defect in diamond has been shown to be bright, stable, and has a long lived spin memory, thus serving as an optimal quantum memory for this purpose. By combining these defects with nanofabricated nanocavities which concentrate light into subwavelength mode volumes, we have demonstrated a platform capable of deterministic spin-photon interactions (C > 1).

Initial work has already shown the power of the SiV platform for quantum networking, including the demonstration of a memory enhanced quantum communications link [1]. Future work is looking to further develop the platform with added functionalities (e.g. strain tuning [2]) while also continuing to perform more elaborate quantum photonics experiments.

[1] Experimental demonstration of memory-enhanced quantum communication  [M. Bhaskar, et al. Nature 580, 60-64 (2020)]

[2] Quantum Interference of Electromechanically Stabilized Emitters in Nanophotonic Devices [B. Machielse, et al. Physical Review X 9, 031022 (2019)]