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arXiv · 1201.3707

Spectroscopy of spin-orbit quantum bits in indium antimonide nanowires

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·L. P. Kouwenhoven
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Abstract

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.

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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, L. P. Kouwenhoven. 2012-01-18. Spectroscopy of spin-orbit quantum bits in indium antimonide nanowires. https://doi.org/10.1103/physrevlett.108.166801

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