We present a 1024-element near-infrared imaging array of superconducting nanowire single photon detectors (SNSPDs) using a 32×32 row-column multiplexing architecture. The array has an active area of 0.96 × 0.
The study demonstrates a clear violation of local realism principles by using entangled photon pairs, ensuring all events are spacelike separated.
The setup includes advanced technology such as rapid random number generators and precise photon detectors, allowing for accurate measurements free from fair-sampling biases.
The results yield extremely low p values (as small as 5.9×10^{-9}), reinforcing the conclusion that local realism cannot explain the observed phenomena in the experiment.