Microwave-driven coherent operation of a semiconductor quantum dot charge qubit

Demonstrates universal resonant control of a silicon semiconductor charge qubit while remaining near the zero-detuning sweet spot.

Key Results

Reached Rabi frequencies up to $2 GHz$ for a $4.5 GHz$ charge qubit.
Implemented rotations about arbitrary Bloch-sphere axes with resonant AC control.
Measured process fidelities above 86% using process tomography and gate-set tomography.