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arXiv 1106.5328cond-mat.supr-con
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小约瑟夫森结阵列中锁相布洛赫振荡的观测

Towards the observation of phase locked Bloch oscillations in arrays of small Josephson junctions

Felix Maibaum, Sergey V. Lotkhov, A. B. Zorin

摘要:

我们已经设计了一个实验,并进行了广泛的模拟和初步的测量,以确定一组现实的电路参数,应允许观察恒定电流的步骤,在I=2ef在短阵列的小约瑟夫森结下的外部交流驱动频率f。这些步骤的观察表明布洛赫振荡与外部驱动器的相位锁定需要一个高阻抗环境的阵列,这是由芯片上的电阻器靠近结提供。我们表明,的宽度和形状的步骤至关重要地取决于驱动器的形状和电阻器中的电子温度。

英文摘要:

We have designed an experiment and performed extensive simulations and preliminary measurements to identify a set of realistic circuit parameters that should allow the observation of constant-current steps at I=2ef in short arrays of small Josephson junctions under external AC drive of frequency f. Observation of these steps demonstrating phase lock of the Bloch oscillations with the external drive requires a high-impedance environment for the array, which is provided by on-chip resistors close to the junctions. We show that the width and shape of the steps crucially depend on the shape of the drive and the electron temperature in the resistors.

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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