Heralded generation of high-purity ultrashort single photons in programmable temporal shapes

2017/11/30 by Vahid Ansari, Emanuele Roccia, Matteo Santandrea +9
Physics and Astronomy · #quant-ph

paper · pdf · doi:10.1364/oe.26.002764

published as Opt. Express 26(3), 2764-2774 (2018)

arxiv created 2018/01/28 · arxiv updated 2018/01/30

Abstract

We experimentally demonstrate a source of nearly pure single photons in arbitrary temporal shapes heralded from a parametric down-conversion (PDC) source at telecom wavelengths. The technology is enabled by the tailored dispersion of in-house fabricated waveguides with shaped pump pulses to directly generate the PDC photons in on-demand temporal shapes. We generate PDC photons in Hermite-Gauss and frequency-binned modes and confirm a minimum purity of 0.81, even for complex temporal shapes.

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