Theory of coherent control of spin-valley qubits*

Certain semiconductors have an electronic conduction or valence band with a multi-valley structure. This feature opens up the possibility of leveraging the combination of the electronic spin and valley degrees of freedom for coherent quantum dynamics, including opportunities for quantum information processing. In this theory talk, I will introduce the concept of a spin-valley qubit via specific example materials, and review recent progress and open challenges toward exploiting these qubits for quantum information.