  Spin-orbit qubit (SOQ) is the dressed spin by the orbital degree of freedom
through a strong spin-orbit coupling. We show that Coulomb interaction between
two electrons in quantum dots located separately in two nanowires can
efficiently induce quantum entanglement between two SOQs. The physical
mechanism to achieve such quantum entanglement is based on the feasibility of
the SOQ responding to the external electric field via an intrinsic electric
dipole spin resonance.
