Fast long-distance control of spin qubits by photon-assisted cotunneling

We investigate theoretically the long-distance coupling and spin exchange in an array of quantum dot spin qubits in the presence of microwaves. We find that photon-assisted cotunneling is boosted at resonances between photon and energies of virtually occupied excited states and show how to make it spin selective. We identify configurations that...

Measurement Efficiency and n-Shot Readout of Spin Qubits

Universal Phase Shift and Nonexponential Decay of Driven Single-Spin Oscillations