The current advancements in quantum technologies will enable the development of ultrafast data processing and communications which will lead to scalable quantum networks and computation. In the center of these developments is an advanced material science platform allowing realization of quantum devices and addressing and readout protocols. The nanoscale nature of this topic brings forth challenges in the materials physics, chemistry and engineering needed to enable this development. This symposium will address the materials issues associated with developing quantum technologies: properties of new and existing color centers, engineering properties especially for quantum memory, entanglement and readout requirements, and defining the limits of competing interactions which cause spin decoherence. Development and understanding of addressable quantum states in solid state materials, such as color centers in diamond and point defects in silicon and silicon carbide, that are coherent at non-cryogenic temperatures provides the framework for these innovative technologies. This symposium aims to address recent progress in solid state quantum technologies that are driven by materials preparation and the associated color center or defect characterization. The topics that will be addressed will include defect formation and characterization including scenarios on managing the effects of level crossing when appropriate, quantum photonics, entanglement, and addressing/read-out of quantum states. External materials issues that affect applications are also of interest.