The key to quantum computing is robust and stable nanoscale devices that permit controlled manipulation of coherence across multiple qubits. Despite the progress with silicon, superconductors, and trapped ion devices, these materials face sufficiently high challenges to warrant investigation of fundamentally different systems as potential qubits. This includes reliability in fabricating material properties such as bandgap structure, reproducibility in nanoscale layout and device performance, and insensitivity to microscopic defects in surface strain and roughness. The device initiative focuses on new methods to design and characterize the behavior of emerging quantum technologies. This includes performing small-scale benchmarking measurements as well as using model and simulation to verify device operation.