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
收藏
页码：1634 / 1636
页数：3
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