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arXiv 0710.1852cond-mat.mes-hallcond-mat.stat-mech
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量子点接触中非高斯涨落的探测

Detection of non-Gaussian Fluctuations in a Quantum Point Contact

G. Gershon, Yu. Bomze, E. V. Sukhorukov, M. Reznikov

摘要:

报道了通过可调谐传输势垒(量子点接触)的电流涨落的实验研究。我们测量的概率分布函数的精度足以提取前三个累积量的传输电荷。为了获得本征量,对应于电压偏置势垒,我们采用了一个程序,占外部电路和放大器的响应。第三累积量,得到了高精度,被发现同意与预测的统计运输在非泊松制度。

英文摘要:

An experimental study of current fluctuations through a tunable transmission barrier, a quantum point contact, are reported. We measure the probability distribution function of transmitted charge with precision sufficient to extract the first three cumulants. To obtain the intrinsic quantities, corresponding to voltage-biased barrier, we employ a procedure that accounts for the response of the external circuit and the amplifier. The third cumulant, obtained with a high precision, is found to agree with the prediction for the statistics of transport in the non-Poissonian regime.

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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