Superconducting microwire detectors based on WSi with single-photon sensitivity in the near-infrared
Applied Physics Letters2020Vol. 116(24)
Citations Over TimeTop 10% of 2020 papers
Jeff Chiles, Sonia Buckley, Adriana Lita, Varun Verma, Jason P. Allmaras, Boris Korzh, Matthew D. Shaw, Jeffrey M. Shainline, Richard P. Mirin, S. W. Nam
Abstract
We report on the fabrication and characterization of single-photon-sensitive WSi superconducting detectors with wire widths from 1 μm to 3 μm. The devices achieve the saturated internal detection efficiency at a wavelength of 1.55 μm and exhibit maximum count rates in excess of 105 s−1. We also investigate the material properties of the silicon-rich WSi films used for these devices. We find that many devices with active lengths of several hundred micrometers exhibit critical currents in excess of 50% of the depairing current. A meandered detector with a 2.0 μm wire width is demonstrated over a surface area of 362 × 362 μm2, showcasing the material and device quality achieved.
Related Papers
- → Fabrication design for a high-quality laser diode-based ceramic converter for a laser headlamp application(2017)57 cited
- → A multi-probe micro-fabrication apparatus based on the friction-induced fabrication method(2013)12 cited
- → Fabrication of ITER Central Solenoid Model Coil inner module(1997)7 cited
- → Effect of Fabrication Parameters on Mechanical Properties of Al<sub>2</sub>O<sub>3</sub> Ceramic Tool Materials(2008)3 cited
- → -1D Fabrication: Investigating Decoupling Dimensions of Fabrication Output and Fabrication Machine Size(2022)