Superradiant diamond color center arrays coupled to concave plasmonic nanoresonators
Posted on 2019-10-14 - 16:21
Superradiantly enhanced emission of SiV diamond color centers was achieved for the first time via numerically optimized concave plasmonic nanoresonators. Advantages of different numbers of SiV color centers, diamond-silver (bare) and diamond-silver-diamond (coated) core-shell nanoresonator types, spherical and ellipsoidal geometries were compared. Indistinguishable superradiance is reached via four color centers, which is accompanied by line-width narrowing except in a coated ellipsoidal nanoresonator that uniquely outperforms its bare counterpart. Seeding of both spherical and bare ellipsoidal nanoresonators with six color centers results in larger fluorescence enhancement and better overridden superradiance thresholds simultaneously. Both phenomena are the best optimized in a six color centers seeded ellipsoidal bare nanoresonator of slightly less pronounced bad-cavity characteristics.
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Csete, Maria; Vass, Dávid; Szenes, Andras; Bánhelyi, Balázs; Csendes, Tibor; Szabo, Gabor (2019). Superradiant diamond color center arrays coupled to concave plasmonic nanoresonators. Optica Publishing Group. Collection. https://doi.org/10.6084/m9.figshare.c.4519073
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AUTHORS (6)
MC
Maria Csete
DV
Dávid Vass
AS
Andras Szenes
BB
Balázs Bánhelyi
TC
Tibor Csendes
GS
Gabor Szabo