27 January 2017 High absorption efficiency and polarization-insensitivity in superconducting-nanowire single-photon detectors
Author Affiliations +
The performance of superconducting-nanowire single-photon detectors depends on the efficiency of light absorption in the ultrathin (3-8 nm) superconducting nanowire. In this work, we will discuss two approaches to boost light absorption: coupling the nanowire to the evanescent field propagating in a waveguide and enclosing the nanowire in an optical cavity. The latter method is the most widely used, but it is intrinsically very sensitive to the polarization of light. To overcome this issue, we propose some innovative cavity designs which make use of high-index (n >2) dielectrics. With this technique, highly-efficient polarization-insensitive devices can be easily implemented.
Conference Presentation
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Luca Redaelli, Luca Redaelli, Gabriele Bulgarini, Gabriele Bulgarini, Sergiy Dobrovolskiy, Sergiy Dobrovolskiy, Sander Dorenbos, Sander Dorenbos, Anna Mukhtarova, Anna Mukhtarova, Val Zwiller, Val Zwiller, Eva Monroy, Eva Monroy, Jean-Michel Gérard, Jean-Michel Gérard, } "High absorption efficiency and polarization-insensitivity in superconducting-nanowire single-photon detectors", Proc. SPIE 10111, Quantum Sensing and Nano Electronics and Photonics XIV, 101112K (27 January 2017); doi: 10.1117/12.2252332; https://doi.org/10.1117/12.2252332

Back to Top