DARPA’s DETECT developed Single photon detector (SPD) for quantum computers, communications, and submarine detection

The process of detecting light—whether with our eyes, cameras or other devices—is at the heart of a wide range of civilian and military applications, including light or laser detection and ranging (LIDAR or LADAR), photography, astronomy, quantum information processing, medical imaging, microscopy and communications, including underwater Blue-Green communications.  Detection of photons—the fundamental particles of light—is…