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Dual-channel, single-photon upconversion detector at 1.3 μm

Published

Author(s)

Jason S. Pelc, Paulina S. Kuo, Oliver T. Slattery, Lijun Ma, Xiao Tang, Martin M. Fejer

Abstract

We demonstrate efficient, single-photon upconversion detection of two wavelengths in the 1300-nm band. The upconversion detector is based on a phase-modulated, periodically poled LiNbO3 waveguide that simultaneously quasi-phasematches two sum-frequency-generation processes. The two channels exhibited 31% and 25% photon detection efficiency, as well as very low dark count rates (650 s-1 and 550 s-1, respectively). We investigate applications of the multi-channel upconversion detector as a beamsplitter and demultiplexer to increase the count rates before detector saturation, and to improve temporal resolution using multiplexing.
Citation
Optics Express
Volume
20
Issue
17

Keywords

Quantum detectors, nonlinear optics, parametric processes, beam splitters
Created August 3, 2012, Updated December 5, 2018