arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1907.08445cond-mat.mes-hallquant-ph
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动态量子点电势分布的推导

Derivation of potential profile of a dynamic quantum dot

Nathan Johnson, Gento Yamahata, Akira Fujiwara

摘要:

我们报告了一种方法来推导动态量子点中的势垒轮廓形状,并显示负载统计,因此电子转移的准确性,显着依赖于势垒的形状。该方法朝着可调势垒形状迈出了进一步的一步,这将大大提高单电子源的精度,从而允许单电子电流用于量子传感、量子信息和计量学。我们应用我们的方法的情况下,一个可调势垒单电子泵,一个示例性的设备,显示作为热单电子波包的来源的承诺。

英文摘要:

We report a method to derive the potential barrier profile shape in a dynamic quantum dot and show the loading statistics, and hence accuracy of electron transfer, depend significantly on the shape of the barrier. This method takes a further step towards tunable barrier shapes, which would greatly increase the accuracy of single electron sources, allowing the single electron current to be useful for quantum sensing, quantum information and metrology. We apply our method to the case of a tunable-barrier single-electron pump, an exemplary device that shows promise as a source of hot single electron wavepackets.

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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