Light detectors are crucial components of optical imaging and telecommunication systems. The ultimate photon detector is capable of detecting even an elementary particle of light, a single photon. Single Quantum was established in 2012 as the first European company manufacturing and commercializing the ground-breaking technology of superconducting single photon detectors. Our mission is to provide the best performance in photon detection, thus making even the most demanding optical applications finally possible. Our multi-channel detection system has already been chosen by more than 80 academic and industrial labs all over the world to perform complex optical measurements. The unique combination of unparalleled detection efficiency and time resolution makes our superconducting detectors the ideal choice for quantum communication and cryptography, infrared fluorescence spectroscopy, and laser ranging.