aPeak Inc is a privately-owned company developing innovative single-photon detection systems, and application specific solutions for proof-of-concept designs. Principals of the firm offer services the the arenas of optical system design, assembly and alignment, customized packaging of existing GPD arrays, custom ASIC design and fabrication and FPGA code development. aPeak personnel undertake applied engineering research, develop and market sensor array prototypes with single-photon sensitivity and custom detection technologies for scientific and special applications.