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We present a new method for image denoising based on singularity analysis. The image is characterized via its multifractal spectrum, which mode yields the most frequent HH older exponent. Using 2-microlocal analysis, we deene an operator that shifts the spectrum so that the transformed image has almost sure HH older exponent a little above 2. This… (More)
By varying the width of an exciting pump pulse, very efficient generation of photon pairs, ranging from anti-correlated to nearly unentangled, is possible in existing silicon nitride microring resonators.