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arXiv 0810.2938cond-mat.mes-hall
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约瑟夫森结噪声检测器的反馈和速率不对称性

Feedback and Rate Asymmetry of the Josephson Junction Noise Detector

D. F. Urban, Hermann Grabert

摘要:

约瑟夫森结噪声检测器通过偏置电流反转时从零电压状态逃逸的速率的不对称性来测量非高斯噪声的偏斜度。详细研究了该检测器对噪声发生装置的反馈。对第二个约瑟夫森结作为噪声产生器件作了简明的预测。该分量的强非线性意味着特别强的反馈效应,包括当所施加的电压接近超导能隙的两倍时速率不对称性的符号的改变。

英文摘要:

The Josephson junction noise detector measures the skewness of non-Gaussian noise via the asymmetry of the rate of escape from the zero-voltage state upon reversal of the bias current. The feedback of this detector on the noise generating device is investigated in detail. Concise predictions are made for a second Josephson junction as noise generating device. The strong nonlinearity of this component implies particularly strong feedback effects, including a change of sign of the rate asymmetry as the applied voltage approaches twice the superconducting gap.

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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