Spectroscopy of spin-orbit quantum bits in indium antimonide nanowires
  Double quantum dot in the few-electron regime is achieved using local gating in an InSb nanowire. The spectrum of two-electron eigenstates is investigated using electric dipole spin resonance. Singlet-triplet level repulsion caused by spin-orbit interaction is observed. The size and the anisotropy of singlet-triplet repulsion are used to determine the magnitude and the orientation of the spin-orbit effective field in an InSb nanowire double dot. The obtained results are confirmed using spin blockade leakage current anisotropy and transport spectroscopy of individual quantum dots. 
S. Nadj-Perge, V. S. Pribiag, J. W. G. van den Berg, K. Zuo, S. R.   Plissard, E. P. A. M. Bakkers, S. M. Frolov, and L. P. ...
cond-mat.mes-hall