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arXiv 1601.02469cond-mat.mes-hall
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单量子能级电子转门

Single Quantum Level Electron Turnstile

D. M. T. van Zanten, D. M. Basko, I. M. Khaymovich, J. P. Pekola, H. Courtois, C. B. Winkelmann

摘要:

我们报道了一个单电子源的实现,其中电流通过隧道耦合到两个超导引线(S)的单能级量子点(Q)传输。当用交流栅极电压驱动时,实验演示了电子旋转门操作。与更传统的超导体-正常金属-超导体旋转门相比,我们的SQS设备呈现出许多新的特性,包括对超导引线中不可避免的非平衡准粒子的存在具有更高的免疫力。此外,我们还证明了它能够以非常窄的能量分布提供电子。

英文摘要:

We report on the realization of a single-electron source, where current is transported through a single-level quantum dot (Q), tunnel-coupled to two superconducting leads (S). When driven with an ac gate voltage, the experiment demonstrates electron turnstile operation. Compared to the more conventional superconductor - normal metal - superconductor turnstile, our SQS device presents a number of novel properties, including higher immunity to the unavoidable presence of non-equilibrium quasiparticles in superconducting leads. In addition, we demonstrate its ability to deliver electrons with a very narrow energy distribution.

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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