Hybrid photonic crystal cavity and waveguide for coupling to diamond NV-centers.
A design for an ultra-high Q photonic crystal nanocavity engineered to interact with nitrogen-vacancy (NV) centers located near the surface of a single crystal diamond sample is presented. The structure is based upon a nanowire photonic crystal geometry, and consists of a patterned high refractive index thin film, such as gallium phosphide (GaP), supported by a diamond substrate. The nanocavity supports a mode with quality factor Q > 1.5 x 10(6) and mode volume V < 0.52(lambda/nGaP)(3), and promises to allow Purcell enhanced collection of spontaneous emission from an NV located more than 50 nm below the diamond surface. The nanowire photonic crystal waveguide can be used to efficiently couple light into and out of the cavity, or as an efficient broadband collector of NV phonon sideband emission. The proposed structures can be fabricated using existing materials and processing techniques.
Barclay
Paul E
PE
Hewlett-Packard Laboratories, Palo Alto, CA 94304, USA. paul.barclay@hp.com
Fu
Kai-Mei
KM
Santori
Charles
C
Beausoleil
Raymond G
RG
D017076:Computer-Aided Design; D003460:Crystallization / Q000379:methods; D018130:Diamond / Q000737:chemistry*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology / Q000295:instrumentation*; D055096:Optical Devices; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014159:Transducers
D018130:Diamond