Local detection efficiency of a NbN superconducting single photon detector explored by a scattering scanning near-field optical microscope | Zendy

Qiang Wang | Zendy; Jelmer J. Renema | Zendy; A. Engel | Zendy; M. P. van Exter | Zendy; M. J. A. de Dood | Zendy

Open Access

Local detection efficiency of a NbN superconducting single photon detector explored by a scattering scanning near-field optical microscope

Author(s) -

Qiang Wang,

Jelmer J. Renema,

A. Engel,

M. P. van Exter,

M. J. A. de Dood

Publication year - 2015

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.23.024873

Subject(s) - optics , detector , microscope , near field scanning optical microscope , scattering , materials science , optical microscope , absorption (acoustics) , near and far field , photon , microscopy , physics , optoelectronics , scanning electron microscope

We propose an experiment to directly probe the local response of a superconducting single photon detector using a sharp metal tip in a scattering scanning near-field optical microscope. The optical absorption is obtained by simulating the tip-detector system, where the tip-detector is illuminated from the side, with the tip functioning as an optical antenna. The local detection efficiency is calculated by considering the recently introduced position-dependent threshold current in the detector. The calculated response for a 150 nm wide detector shows a peak close to the edge that can be spatially resolved with an estimated resolution of ∼ 20 nm, using a tip with parameters that are experimentally accessible.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research