Integrated autocorrelator based on superconducting nanowires
We demonstrate an integrated autocorrelator based on two superconducting single-photon detectors patterned on top of a GaAs ridge waveguide. This device enables the on-chip measurement of the second-order intensity correlation function g(2)(τ). A polarization-independent device quantum efficiency in the 1% range is reported, with a timing jitter of 88 ps at 1300 nm. g(2)(τ) measurements of continuous-wave and pulsed laser excitations are demonstrated with no measurable crosstalk within our measurement accuracy. © 2013 Optical Society of America.
Sahin, D., Gaggero, A., Hoang, T., Frucci, G., Mattioli, F., Leoni, R., Beetz, J., & Lermer, M. (2013). Integrated autocorrelator based on superconducting nanowires. Optics Express, 21 (9), 11162-11170. https://doi.org/10.1364/OE.21.011162