arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0802.1364cond-mat.mes-hallcond-mat.supr-con
收藏

混合SET晶体管中的非级联电荷泵浦

Non-adiabadic charge pumping in a hybrid SET transistor

Dmitri V. Averin, Jukka P. Pekola

摘要:

本文从理论上研究了基于SINIS或NISIN混合SET晶体管的电荷转门中的电流量化。量子化的准确性受到Andreev反射或库珀对电子共隧穿的限制。当这些过程直接与最低阶隧穿竞争时,这些过程的速率在“高于阈值”的情况下计算。我们表明,通过塑造的交流栅极电压驱动的旋转栅门,它应该是可能的,以实现$10^{-8}$,同时保持量化的电流的绝对值的顺序为30 pA的,只是一个旋转栅门与现实的参数,使用铝作为超导体。

英文摘要:

We study theoretically current quantization in the charge turnstile based on the hybrid (SINIS or NISIN) SET transistor. The quantization accuracy is limited by either Andreev reflection or by Cooper pair - electron cotunneling. The rates of these processes are calculated in the ``above-the-threshold'' regime when they compete directly with the lowest-order tunneling. We show that by shaping the ac gate voltage driving the turnstile, it should be possible to achieve the metrological accuracy of $10^{-8}$, while maintaining the absolute value of the quantized current on the order of 30 pA, just by one turnstile with realistic parameters using aluminium as superconductor.

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。

↑