Condensed-matter physics - The noise is the signal

被引：151
作者：
Landauer, R [1 ]
机构：
[1] IBM Corp, Thomas J Watson Res Ctr, Yorktown Heights, NY 10598 USA
来源：
NATURE | 1998年 / 392卷 / 6677期
关键词：
D O I：
10.1038/33551
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：
Noise is usually just a hindrance to signal detection. But advances in measurement techniques mean that noise can now be used to probe electron kinetics. In systems such the fractional quantum Hall effect, many body interactions create carriers with effective charges less than that of an electron, reducing noise. In contrast, a system can be constructed with electrons sandwiched between two barriers, which increases noise by a positive feedback mechanism.
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收藏
页码：658 / 659
页数：2
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