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The resolution and accuracy of the number of photons detected by a silicon photomultiplier (SiPM) are limited by the excess noise, which consists mainly of after pulsing and optical crosstalk. Since these excess noises are correlated with each other, it is challenging to determine the after pulsing and the optical crosstalk probabilities independently of the output signal of the SiPM. Here we examine...
The ability to filter quantum states is a key capability in quantum information science and technology, where one-qubit filters, or polarizers, have found wide application. Filtering on the basis of entanglement requires extension to multi-qubit filters with qubit-qubit interactions. Such devices have many important applications to quantum technologies.
We evaluated a large birefringence of 0.85 in a SOI layer by totally analyzing the measured index and theoretical and experimental dispersion characteristics of Si photonic wires. It was applied to an ultracompact polarization-insensitive AWG.
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