Kestner, JasonColmenar, Ralph Kenneth Legarde2022-09-292022-09-292022-01-0112522http://hdl.handle.net/11603/25937Noisy intermediate-scale quantum devices suffer primarily from coherent systematic error and stand to benefit from robust quantum control. To this end, methods of dynamical error suppression provide a means to achieve gate error rates that may be sufficient for fault-tolerant quantum computing. We present in this work a collection of theoretical studies that focuses on two methods in particular: composite pulse sequences and filter function formalism. We first employ composite pulses to reduce the effects of static systematic errors in coupled solid-state qubits. We then use the filter function formalism to analyze geometric gates. In particular, we disprove the geometric gate robustness conjecture which states that geometric gates are intrinsically more robust against certain errors than dynamical gates since their accumulated phase is related to some global geometric property of the system's evolution. Finally, we use dynamical invariant theory to develop a framework that is ideal for filter function engineering. We also use this framework to further analyze some properties of geometric gates.application:pdfThis item may be protected under Title 17 of the U.S. Copyright Law. It is made available by UMBC for non-commercial research and education. For permission to publish or reproduce, please see http://aok.lib.umbc.edu/specoll/repro.php or contact Special Collections at speccoll(at)umbc.eduDynamical invariantsGeometric gatesQuantum computingQuantum controlText