Synthesis of Spin Defects in Low Dimensionality and Heteropolytypic Platforms for Quantum Applications

Wide band-gap semiconductor hosted, optically addressable point-defects are a versatile platform for a number of quantum information science (QIS) applications. These spin qubits are inherently sensitive to their local crystalline, charge, and nuclear spin environments making them ideal for quantum sensing applications. Recent advances in host material growth, nanofabrication, and deterministic defect creation have enabled the ability to engineer the local environment surrounding these spin qubits via the control of host material polytype, isotopic engineering, and host dimensionality. Herein, we present on these advances, highlighting novel low dimensionality (<i>1</i>) and heteropolytypic (<i>2</i>) quantum platforms. These advances will be presented in the context of deterministic integration of these quantum systems with other classical or quantum systems, as a means for local defect control, and as probes of local spin-bath dynamics.<br/><br/>References:<br/>1. X. Guo <i>et al.</i>, Tunable and Transferable Diamond Membranes for Integrated Quantum Technologies. <i>Nano Lett.</i> <b>21</b>, 10392–10399 (2021).<br/>2. K. J. Harmon <i>et al.</i>, Designing silicon carbide heterostructures for quantum information science: challenges and opportunities. <i>Mater. Quantum Technol.</i> <b>2</b>, 023001 (2022).<br/> <br/>Supported by US Department of Energy, Office of Science, Basic Energy Sciences, Materials and Sciences Engineering Division