Efficient photon collection from a nitrogen vacancy center in a circular bullseye grating.
basic_science · Level V
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- Record sourced from PubMed, PMID 25714414.
- Also identified by DOI 10.1021/nl503451j.
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Abstract
Efficient collection of the broadband fluorescence from the diamond nitrogen vacancy (NV) center is essential for a range of applications in sensing, on-demand single photon generation, and quantum information processing. Here, we introduce a circular "bullseye" diamond grating which enables a collected photon rate of (2.7 ± 0.09) × 10(6) counts per second from a single NV with a spin coherence time of 1.7 ± 0.1 ms. Back-focal-plane studies indicate efficient redistribution of the NV photoluminescence into low-NA modes by the bullseye grating.