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arXiv 1606.01065cond-mat.mes-hall
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碳纳米管双量子点中非共线自旋轨道磁场

Non-collinear spin-orbit magnetic fields in a carbon nanotube double quantum dot

Morten Canth Hels, Bernd Braunecker, Kasper Grove-Rasmussen, Jesper Nygård

摘要:

实验证明,在弯曲的碳纳米管两段器件中可以实现非共线的内禀自旋轨道磁场。在量子点体系中分析的每个片段显示出近四重简并壳层结构,允许识别两个片段之间的自旋-轨道耦合和角度。此外,我们确定了特定壳层和磁场下量子态的四个唯一自旋方向。这类量子点系统与诱导超导关联相结合时特别有趣,因为它可以促进非常规的超导性和库珀对纠缠的检测。我们的设备包括必要的元素。

英文摘要:

We demonstrate experimentally that non-collinear intrinsic spin-orbit magnetic fields can be realized in a curved carbon nanotube two-segment device. Each segment, analyzed in the quantum dot regime, shows near four-fold degenerate shell structure allowing for identification of the spin-orbit coupling and the angle between the two segments. Furthermore, we determine the four unique spin directions of the quantum states for specific shells and magnetic fields. This class of quantum dot systems is particularly interesting when combined with induced superconducting correlations as it may facilitate unconventional superconductivity and detection of Cooper pair entanglement. Our device comprises the necessary elements.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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