Nanoantenna Enhancement for Telecom-Wavelength Superconducting Single Photon Detectors
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 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.
- Publication:
-
Nano Letters
- Pub Date:
- February 2015
- DOI:
- 10.1021/nl503055a
- arXiv:
- arXiv:1501.03333
- Bibcode:
- 2015NanoL..15..819H
- Keywords:
-
- Physics - Optics;
- Condensed Matter - Superconductivity;
- Quantum Physics
- E-Print:
- doi:10.1021/nl503055a