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We report successful fabrication of niobium nitride single-photon detectors on aluminum nitride substrates. The fabricated detectors showed saturated detection efficiency at 2.45 K under 1550 nm illumination (indicating near-unity internal quantum efficiency), sub-60-ps jitter, and ∼6 ns reset time.
Single nitrogen vacancy centers in nanostructured diamond form high quality nodes integrated into low-loss photonic circuitry, enabling on-chip detection and signal manipulation. Pre-selection provides near-unity yield. Long coherence times are demonstrated in integrated nodes.
In this work, we demonstrate saturated photon detection efficiency with narrow NbN nanowires and SNAPs to boost the signal-to-noise ratio, and we demonstrate a stabilizing choke inductance that is part of the optically-active area.
We present an optimized fabrication process for superconducting nanowire single-photon detectors that allowed us to obtain a yield of ∼70% for detectors based on 80-nm-wide niobium nitride nanowires. We fabricated detectors that showed 24-ps timing jitter and saturated detection efficiency without the need for cryogenic amplifiers, allowing for operation in a low-bias low-dark-count-rate regime while...
We present some major challenges of mid-infrared superconducting nanowire single-photon detector technology and our device design with nano-antenna integration to address these challenges.
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