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arXiv 1011.5347cond-mat.mes-hall
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门可调谐石墨烯双量子点中的分子态

Molecule States in a Gate Tunable Graphene Double Quantum Dot

L. J. Wang, H. O. Li, Z. Su, T. Tu, G. Cao, C. Zhou, X. J. Hao, G. C. Guo, G. P. Guo

摘要:

我们测量了一个石墨烯双量子点器件,该器件具有多个用于增强控制的静电门来研究它,在低温下的输运测量揭示了蜂窝电荷稳定性图,该图可以从弱到强的点间隧道耦合机制进行调节。我们精确地提取了一个大的interdot隧道耦合强度为这个系统允许观察隧道耦合的分子状态延伸到整个双点。这种干净、高度可控的系统是无核自旋世界中量子设备的重要组成部分。

英文摘要:

We have measured a graphene double quantum dot device with multiple electrostatic gates that are used to enhance control to investigate it. At low temperatures the transport measurements reveal honeycomb charge stability diagrams which can be tuned from weak to strong interdot tunnel coupling regimes. We precisely extract a large interdot tunnel coupling strength for this system allowing for the observation of tunnel-coupled molecular states extending over the whole double dot. This clean, highly controllable system serves as an essential building block for quantum devices in a nuclear-spin-free world.

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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