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We demonstrate Purcell enhancement of single NV centers in L3 photonic crystal cavities made from high-purity single-crystal diamond. Furthermore, NV centers were created using an implantation mask in the cavity high field region.
We demonstrate an over-80-fold enhancement of an NV's zero-phonon line emission inside cavity in the Purcell regime within a high-purity, electronic-grade diamond substrate. This system is a promising building block for quantum networks.
Optical nanocavities (racetrack resonators and photonic crystal cavities) are fabricated in bulk single-crystal diamond via angled-etching. Devices operating in the telecom band exhibited Q-factors exceeding 105, while devices in the visible yielded Q-factors approaching 104.
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