First demonstration of universal control of encoded spin qubits

https://phys.org/news/2023-03-universal-encoded-qubits.html

"trap single electrons in quantum dots... encoded silicon/silicon germanium quantum dot qubits use 3 electron spins and control whereby voltages applied to metal gates partially swap directions of those electron-spins without aligning them... applying thousands of these precisely calibrated voltage pulses in strict relation to one another over course of few millionths of second... scalable fault tolerance and computational advantage, major steps toward a commercial quantum computer"

Related: Physicists take step toward fault-tolerant quantum computing
https://phys.org/news/2023-04-physicists-fault-tolerant-quantum.html