Bidirectional counting of single electrons

Toshimasa Fujisawa; Toshiaki Hayashi; Ritsuya Tomita; Yoshiro Hirayama

doi:10.1126/science.1126788

Bidirectional counting of single electrons

Toshimasa Fujisawa, Toshiaki Hayashi, Ritsuya Tomita, Yoshiro Hirayama

Center for Science and Innovation in Spintronics (CSIS)

Research output: Contribution to journal › Article › peer-review

316 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	1634-1636
Number of pages	3
Journal	Science
Volume	312
Issue number	5780
DOIs	https://doi.org/10.1126/science.1126788
Publication status	Published - 2006 Jun 16

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10.1126/science.1126788

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Bidirectional counting of single electrons

Abstract

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