The Department of Defense (DOD) is seeking proposals for the topic of "Optical-Atomic System Integration & Calibration (OASIC)" as part of the Small Business Innovation Research (SBIR) program. The objective is to create a user facility for an atom-based quantum testbed that can prototype, validate, and benchmark nanophotonic, optoelectronic, and electronic components and sub-systems. The goal is to enable the development of scalable, low-SWaP atom-based quantum sensors, clocks, computing architectures, and other integrated or chip-scale quantum technologies. The solicitation emphasizes the need for rigorous testing and evaluation procedures compatible with the performance requirements of atom-based quantum devices. The Phase I of the project will involve designing and analyzing the performance and operation of the proposed quantum testbed user facility, as well as developing an operation and business plan. The Phase II will focus on constructing and demonstrating the quantum testbed based on the Phase I design. The project duration for Phase II is 24 months. The development of integrated, low-SWaP quantum systems has applications in defense, communications, logistics, exploration, pharmaceuticals, and scientific research. The solicitation encourages the facility to be located at an academic site with a commercial entity responsible for operation and management. The Phase II milestones include reports on component acquisition and fabrication, interim progress reports, and a final report describing the construction and benchmarking of the quantum testbed. The Phase III of the project involves the dual-use applications of the developed quantum systems in both defense and commercial sectors.