In our new paper, we demonstrate the integration of amorphous tungsten silicide superconducting nanowire
single-photon detectors on titanium in-diffused lithium niobate waveguides. We show
proof-of-principle detection of evanescently coupled photons of 1550 nm wavelength using
bidirectional waveguide coupling for two orthogonal polarization directions. We investigate the
internal detection efficiency as well as detector absorption using coupling-independent
characterization measurements. Furthermore, we describe strategies to improve the yield and
efficiency of these devices.
The paper is available at:
https://iopscience.iop.org/article/10.1088/2515-7647/ac105b
For a video teaser of the paper, click here.
