Shot Noise in Quantum Conductors

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Science  22 Mar 1996:
Vol. 271, Issue 5256, pp. 1689-1690
DOI: 10.1126/science.271.5256.1689


Electronic noise in a device is often an irritating source of interference. In very small quantum devices, however, noise may have interesting physical properties. In his Perspective, Kouwenhoven describes experiments with devices that allow the passage of electrons from one resevoir to another through a small channel. For some conditions, the electrons act more like quantum waves rather than particles and the electronic noise in this structure can be made to vanish completely.