As quantum optics researchers attempt to push the boundaries of experimental physics, the limitations of each component of their systems are engineered away. Researchers have worked for many years to increase the efficiency of their low-light quantum sources and decrease the losses in their optical components. These losses have now become lower than the losses of the commercially available detectors which means the available detectors are now limiting or preventing many cutting-edge research experiments. Researchers are now seeking alternative detector technologies, even those that are costly, because of the strong scientific impetus for low-loss photon detection. Quantum Opus provides researchers with the needed low-loss, high-speed photon detectors that will enable next-generation experiments in quantum optics, optical quantum computation, single-photon communication, low-flux biophotonics, and remote sensing.