Quantum State Engineering in Diamond Membranes

Diamond is a leading material system for quantum science with landmark demonstrations in quantum sensing and communication. We are manufacturing diamond membranes for next generation integrated quantum technologies. The membranes allow straightforward integration of coherent diamond qubits with superconducting detectors, electronics, acoustics, and high-performance photonics. With this platform, we will build the next generation of multiplexed quantum nodes for communication and distributed entanglement. We will also construct on-chip testbeds and networks to investigate novel entanglement protocols and exotic distributed quantum states. Additionally, the membranes allow new opportunities to engineer the quantum states themselves, for instance by improving the spin coherence or enabling ultra-localized qubit placement. This research leverages the state-of-the-art materials science and quantum networking capabilities at Argonne.