Spectroscopy of spin-orbit quantum bits in indium antimonide nanowires.

Title Spectroscopy of spin-orbit quantum bits in indium antimonide nanowires.
Authors 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
Journal Phys Rev Lett
DOI 10.1103/PhysRevLett.108.166801
Abstract

A 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.

Citation 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.Spectroscopy of spin-orbit quantum bits in indium antimonide nanowires.. Phys Rev Lett. 2012;108(16):166801. doi:10.1103/PhysRevLett.108.166801

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