Versatile shaper-assisted discretization of energy-time entangled photons
Abstract
We demonstrate the capability to discretize the frequency spectrum of broadband energy-time entangled photons by means of a spatial light modulator to encode qudits in various bases. Exemplarily, we implement three different discretization schemes, namely frequency bins, time bins and Schmidt modes. Entangled qudits up to dimension d=4 are then revealed by two-photon interference experiments with visibilities violating a d-dimensional Bell inequality.
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