Quantum devices is the academic concept and research field concerned with the design, fabrication, and theoretical understanding of devices that leverage the principles of quantum mechanics for technological applications. It investigates the fundamental physics, material science, and engineering challenges associated with harnessing quantum phenomena such as superposition, entanglement, and quantum tunneling. Key characteristics include operation at the quantum scale and sensitivity to environmental interactions, with significance lying in enabling transformative capabilities beyond classical limitations, particularly in computing, sensing, and communication.