Quantum Semiconductor LLC is a fabless semiconductor company developing Complementary metal–oxide–semiconductor (CMOS) Image Sensors (CIS) with new photo-diode technology incorporating new CMOS-compatible optoelectronic materials. Foundry-fabricated photo-diodes exhibit high gain, which will enable single-photon counting, at low voltages compatible with standard CMOS circuitry. These ultra-sensitive pixels for visible and infra-red can be applied to passive imaging, Light Detection and Ranging (LIDAR), or LAser Detection And Ranging (LADAR). The photo-diode for operation in the visible and near-infra-red range, and custom circuitry, are protected by 13 US patents. A proprietary Monte-Carlo semiconductor device simulator has been developed to model the new physics in order to maximize the performance. Quantum Semiconductor is seeking strategic partnerships with prime defense contractors, or semiconductor companies, or investment from venture capital.