Bolometric detection of quantum shot noise in coupled mesoscopic systems

被引：23

作者：

Hashisaka, Masayuki ^{[1
]}

Yamauchi, Yoshiaki ^{[1
]}

Nakamura, Shuji ^{[1
]}

Kasai, Shinya ^{[1
]}

Ono, Teruo ^{[1
]}

Kobayashi, Kensuke ^{[1
]}

机构：

[1] Kyoto Univ, Inst Chem Res, Kyoto 6110011, Japan

来源：

PHYSICAL REVIEW B | 2008年 / 78卷 / 24期

关键词：

mesoscopic systems; quantum point contacts; shot noise;

D O I：

10.1103/PhysRevB.78.241303

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We demonstrate a scheme to detect the quantum shot noise in coupled mesoscopic systems. By applying the noise thermometry to the capacitively coupled quantum point contacts (QPCs) we prove that the noise temperature of one QPC is in perfect proportion to that of the other QPC which is driven to nonequilibrium to generate quantum shot noise. The present mesoscopic bolometry, which is sensitive to the energy flow of similar to 1 fW, allows us to detect the energy exchange between quantum systems at finite frequency and can also be applied for diverse precise measurements.

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页数：4

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