Finding Clock Transitions in Point Defects using High-Throughput Data

Quantum computing has the potential to meet the increasing demand for computational power by solving some unique issues more efficiently than classical computers. To realize the full capabilities of quantum computing, a reliable physical implementation of quantum bits is essential. Point defects in semiconductors may offer a promising solution for this implementation. However, point defects, like most qubit implementations, would benefit from increased coherence times. For certain point defects, this improvement comes from clock transitions, where the transition frequency becomes locally independent of the magnetic field. This thesis consists of a thorough analysis of clock transitions in point defects. First, the clock transition of the bismuth vacancy (BiV) in CaO is reproduced. Then, an automatic workflow for finding clock transitions and converging computational parameters are built as an extension to the ADAQ (Automatic defect analysis andqualification) software. 10243 clock transitions were found in a set of 3704 defects, 143 of these are due to zero-field splitting, and the rest due to hyperfine interactions. Clock transitions that arise only from zero-field splitting have a clear correlation between separation and the 2nd derivative. Clock transitions that emerge from hyperfine interactions have no such clear trend, meaning that they need to be studied in more detail for individual defects.