Superradiant diamond color center arrays coupled to concave plasmonic nanoresonators

Vass, Dávid and Szenes, András and Bánhelyi, Balázs and Csendes, Tibor and Szabó, Gábor and Csete, Mária (2019) Superradiant diamond color center arrays coupled to concave plasmonic nanoresonators. OPTICS EXPRESS. ISSN 1094-4087 (In Press)

Preview

Text 1807.03248.pdf Download (2MB) | Preview

Abstract

Different types of concave plasmonic nanoresonators have been optimized to achieve superradiantly enhanced emission of SiV color centers in diamond. Comparative study has been performed to consider advantages of different N number of SiV color centers, different diamond-silver (bare) and diamond-silver-diamond (coated) core-shell nanoresonator types, as well as of spherical and ellipsoidal geometry. The complete fluorescence enhancement (qualified by Px factor) monitoring and the cQE corrected quantum efficiency weighted PxcQE objective function optimization promotes to design bad-cavities for plasmonic Dicke effect. The switching into a collective Dicke state via optimized nanoresonators results in a radiated power proportional to N2, which manifest itself in an enhancement proportional to N both of the excitation and emission rates. Accordingly, enhancement proportional to N2 of the Px factor and PxcQE has been reached both via four and six SiV color centers arranged in symmetrical square and hexagonal patterns inside all types of inspected nanoresonators. Coated spherical and bare ellipsoidal nanoresonators result in stronger noncooperative fluorescence enhancement, while superradiance is better achieved via bare spherical nanoresonators independently of SiV color centers number, and via coated (bare) ellipsoidal nanoresonators seeded by four (six) SiV color centers. Indistinguishable superradiant state of four color centers and line-width narrowing is achieved via bare nanoresonators. Six color centers seeded bare spherical (ellipsoidal) nanoresonators result in larger fluorescence enhancement and more significantly overridden superradiance thresholds, while having slightly more (less) pronounced badcavity characteristics. Both phenomena are simultaneously optimized in ellipsoidal bare nanoresonators embedding six color centers with a slightly larger detuning.

Item Type:	Article
Subjects:	Q Science / természettudomány > QC Physics / fizika > QC02 Optics / fénytan
Depositing User:	Dr. Balázs Bánhelyi
Date Deposited:	18 Sep 2019 07:54
Last Modified:	18 Sep 2019 07:54
URI:	http://real.mtak.hu/id/eprint/99755

Available Versions of this Item

• Superradiant diamond color center arrays coupled to concave plasmonic nanoresonators. (deposited 18 Sep 2019 07:54) [Currently Displayed]
  • Superradiant diamond color center arrays coupled to concave plasmonic nanoresonators. (deposited 15 Sep 2021 07:21)

Actions (login required)

Edit Item