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. 2015 Feb 11;15(2):819-22.
doi: 10.1021/nl503055a. Epub 2015 Jan 9.

Nanoantenna enhancement for telecom-wavelength superconducting single photon detectors

Robert M Heath  1 , Michael G Tanner, Timothy D Drysdale, Shigehito Miki, Vincenzo Giannini, Stefan A Maier, Robert H Hadfield
Affiliations
Free article

Nanoantenna enhancement for telecom-wavelength superconducting single photon detectors

Robert M Heath et al. Nano Lett. .
Free article

Abstract

Superconducting nanowire single photon detectors are rapidly emerging as a key infrared photon-counting technology. Two front-side-coupled silver dipole nanoantennas, simulated to have resonances at 1480 and 1525 nm, were fabricated in a two-step process. An enhancement of 50 to 130% in the system detection efficiency was observed when illuminating the antennas. This offers a pathway to increasing absorption into superconducting nanowires, creating larger active areas, and achieving more efficient detection at longer wavelengths.

Keywords: Infrared detector; SNSPD; nanoantenna; single photon detector; superconducting nanowire.

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