Photo-assisted spin transport in double quantum dots with spin–orbit interaction

We investigate the effect of spin-orbit interaction on intra- and interdot particle dynamics a double quantum dot under ac electric fields. The former is modeled as an effective magnetic field that produces electric-dipole spin resonance transitions, while latter introduced via spin-flip tunneling amplitudes. observe appearance non-trivial spin-polarized dark states, arising from ac-induced interference between photo-assisted spin-conserving processes. These states can be employed to precisely measure coupling in systems. Furthermore, we show interplay transitions allows system operate highly tunable filter. Finally, operation resonant flopping-mode qubit for arbitrary voltage amplitudes, allowing high tunability enhanced control possibilities.