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Title: Adjoint-optimized nanoscale light extractor for nitrogen-vacancy centers in diamond
Abstract We designed a nanoscale light extractor (NLE) for the efficient outcoupling and beaming of broadband light emitted by shallow, negatively charged nitrogen-vacancy (NV) centers in bulk diamond. The NLE consists of a patterned silicon layer on diamond and requires no etching of the diamond surface. Our design process is based on adjoint optimization using broadband time-domain simulations and yields structures that are inherently robust to positioning and fabrication errors. Our NLE functions like a transmission antenna for the NV center, enhancing the optical power extracted from an NV center positioned 10 nm below the diamond surface by a factor of more than 35, and beaming the light into a ±30° cone in the far field. This approach to light extraction can be readily adapted to other solid-state color centers.  more » « less
Award ID(s):
1839174
PAR ID:
10294664
Author(s) / Creator(s):
; ; ; ; ; ; ; ; ;
Date Published:
Journal Name:
Nanophotonics
Volume:
10
Issue:
1
ISSN:
2192-8606
Page Range / eLocation ID:
393 to 401
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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