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arXiv 0901.2626cond-mat.mes-hall
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与量子点电容耦合的电子干涉仪

Electronic interferometer capacitively coupled to a quantum dot

Seok-Chan Youn, Hyun-Woo Lee, H. -S. Sim

摘要:

从理论上研究了与量子点电容耦合的弹道电子干涉仪中的电子干涉。当量子点具有带不同过量电荷的简并基态时,干涉的可见性降低。的减少的程度取决于系统参数,如电容耦合的强度,和依赖性进行了分析,在该制度中,电子在点的停留时间远长于通过耦合到点的干涉测量区域的电子飞行时间。这一结果与最近的实验数据是一致的。

英文摘要:

We theoretically study electron interference in a ballistic electronic interferometer capacitively coupled to a quantum dot. The visibility of the interference is reduced when the dot has degenerate ground states with different excess charges. The degree of the reduction depends on system parameters such as the strength of the capacitive coupling, and the dependence is analyzed in the regime where the dwell time of electrons in the dot is much longer than the electron flight time through the interferometry region coupled to the dot. The result is consistent with recent experimental data.

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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