Ordering nuclear spins in silicon quantum dots: part I

The ability to order nuclear spin ensembles in ways that suppress statistical fluctuations would revolutionize quantum computing, sensing, and networking. In this work, we demonstrate a phase-coherent ordering of ²⁹ nuclear spins in gate-defined silicon quantum dots. In the first part of this talk, I will discuss how we leverage the competition between spin-orbit coupling and the electron-nuclear hyperfine interaction to order the nuclei in a semiconductor quantum dot. The nuclear spin-ordering stroboscopically screens the spin-orbit coupling between electronic states. Our work opens a new route for coherent nuclear spin control utilizing spin orbit coupling.