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Nanoantenna enhancement for telecom-wavelength superconducting single photon detectors

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arxiv 1501.03333 v1 pith:54FKIUJD submitted 2015-01-14 physics.optics cond-mat.supr-conquant-ph

Robert M. Heath , Michael G. Tanner , Timothy D. Drysdale , Shigehito Miki , Vincenzo Giannini , Stefan A. Maier , Robert H. Hadfield This is my paper · ORCID
classification physics.opticscond-mat.supr-conquant-ph
keywords superconductingdetectiondetectorsenhancementphotonsingleabsorptionachieving
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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 nm 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.

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