Abstract:SUMMARYWe report the energy-efficient optical input interface using NbN superconducting nanowire-based optical-to-electrical (SN-OE) converters for a single-flux-quantum (SFQ) data processing system. The SN-OE converters with small active areas ranging from 1 × 1 to 10 × 10 µm 2 were fabricated to improve the recovery time by reducing the kinetic inductance of the nanowire. The SN-OE with the smallest area of 1 × 1 µm 2 showed the recovery time of around 0.3 ns, while its detection efficiency for a single phot… Show more
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