Bidirectional counting of single electrons

被引：318

作者：

Fujisawa, T

Hayashi, T

Tomita, R

Hirayama, Y

机构：

[1] NTT Corp, NTT Basic Res Labs, Atsugi, Kanagawa 2430198, Japan

[2] Tokyo Inst Technol, Meguro Ku, Tokyo 1528551, Japan

[3] Japan Sci & Technol Agcy, Solut Oriented Res Sci & Technol, Kawaguchi 3310012, Japan

[4] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan

来源：

SCIENCE | 2006年 / 312卷 / 5780期

关键词：

D O I：

10.1126/science.1126788

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

A bidirectional single-electron counting device is demonstrated. Individual electrons flowing in forward and reverse directions through a double quantum dot are detected with a quantum point contact acting as a charge sensor. A comprehensive statistical analysis in the frequency and time domains and of higher order moments of noise reveals antibunching correlation in single-electron transport through the device itself. The device can also be used to investigate current flow in the attoampere range, which cannot be measured by existing current meters.

引用

页码：1634 / 1636

页数：3

共 28 条

[1] Double quantum dots as detectors of high-frequency quantum noise in mesoscopic conductors [J].