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arXiv · 1512.05149

Spin orbit coupling at the level of a single electron

V. F. Maisi·A. Hofmann·M. Röösli·J. Basset·C. Reichl·W. Wegscheider·T. Ihn·K. Ensslin
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Abstract

We utilize electron counting techniques to distinguish a spin conserving fast tunneling process and a slower process involving spin flips in AlGaAs/GaAs-based double quantum dots. By studying the dependence of the rates on the interdot tunnel coupling of the two dots, we find that as many as 4% of the tunneling events occur with a spin flip related to spin-orbit coupling in GaAs. Our measurement has a fidelity of 99 % in terms of resolving whether a tunneling event occurred with a spin flip or not.

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V. F. Maisi, A. Hofmann, M. Röösli, J. Basset, C. Reichl, W. Wegscheider, T. Ihn, K. Ensslin. 2015-12-16. Spin orbit coupling at the level of a single electron. https://doi.org/10.1103/physrevlett.116.136803

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