The noise is the signal

Rolf Landauer ()
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Rolf Landauer: the IBM Thomas J. Watson Research Center

Nature, 1998, vol. 392, issue 6677, 658-659

Abstract: 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.

Date: 1998
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DOI: 10.1038/33551

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