Spectroscopy of spin-orbit quantum bits in indium antimonide nanowires

S. Nadj-Perge; V.S. Pribiag; J.W.G. Berg; K. Zuo; S.R. Plissard; E.P.A.M. Bakkers; S.M. Frolov; L.P. Kouwenhoven

doi:10.1103/PhysRevLett.108.166801

Spectroscopy of spin-orbit quantum bits in indium antimonide nanowires

S. Nadj-Perge, V.S. Pribiag, J.W.G. Berg, K. Zuo, S.R. Plissard, E.P.A.M. Bakkers, S.M. Frolov, L.P. Kouwenhoven

Photonics and Semiconductor Nanophysics

Research output: Contribution to journal › Article › Academic › peer-review

215 Citations (Scopus)

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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

Original language	English
Article number	166801
Pages (from-to)	1-5
Journal	Physical Review Letters
Volume	108
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevLett.108.166801
Publication status	Published - 2012

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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",

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AU - Pribiag, V.S.

AU - Berg, J.W.G.

AU - Zuo, K.

AU - Plissard, S.R.

AU - Bakkers, E.P.A.M.

AU - Frolov, S.M.

AU - Kouwenhoven, L.P.

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AB - 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

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DO - 10.1103/PhysRevLett.108.166801

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