title: Cascaded frequency upconversion for high-speed single-photon detection at 1550 nm.
abstract: We present a device for two-stage frequency upconversion of single-photon-level signals in the 1.55 μm telecom band to the green spectral region with low excess noise, suitable for detection by low-timing-jitter silicon single-photon avalanche photodiodes (APDs). We achieve a net conversion efficiency of 87% and a system timing jitter below 70 ps FWHM, dominated by the jitter of the APD. Modifications of our device are suitable for downconversion of single photons from visible-wavelength quantum emitters into the telecom band.
authors.affiliation: E L Ginzton Laboratory, Stanford University, Stanford, California 94305, USA. jpelc@stanford.edu
authors.forename: J S
authors.initials: JS
authors.lastname: Pelc
authors.forename: Q
authors.initials: Q
authors.lastname: Zhang
authors.forename: C R
authors.initials: CR
authors.lastname: Phillips
authors.forename: L
authors.initials: L
authors.lastname: Yu
authors.forename: Y
authors.initials: Y
authors.lastname: Yamamoto
authors.forename: M M
authors.initials: MM
authors.lastname: Fejer