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Efficient collection from a nitrogen-vacancy qubit in a circular grating

MetadataDetails
Publication Date2015-01-01
AuthorsLuozhou Li, Edward Chen, Jiabao Zheng, Sara Mouradian, Florian Dolde
InstitutionsColumbia University, Element Six (United States)

We demonstrate a circular ā€˜bullseye’ diamond grating enabling efficient collection of single photons from a single nitrogen-vacancy center with a spin coherence time of 1.7 ms. Back-focal-plane studies indicate efficient redistribution into low-NA modes.