Uncovering dispersion properties in semiconductor waveguides to study photon-pair generation
arXiv:1605.00517 · doi:10.1088/0957-4484/27/43/434003
Abstract
We investigate the dispersion properties of ridge Bragg-reflection waveguides to deduce their phasematching characteristics. These are crucial for exploiting them as sources of parametric down-conversion (PDC). In order to estimate the phasematching bandwidth we first determine the group refractive indices of the interacting modes via Fabry-Perot experiments in two distant wavelength regions. Second, by measuring the spectra of the emitted PDC photons we gain access to their group index dispersion. Our results offer a simple approach for determining the PDC process parameters in the spectral domain and provide an important feedback for designing such sources, especially in the broadband case.
8 pages, 5 figures
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- Optimizing the spectro-temporal properties of photon pairs from Bragg-reflection waveguides
- Photon-number parity of heralded single photons from a Bragg-reflection waveguide reconstructed loss-tolerantly via moment generating function
- Unfolding the Hong-Ou-Mandel interference between heralded photons from narrowband twin beams