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Coupled vibrations

Pertti Juhani Hakonen, Mika A. Sillanpää

Published Jan 1, 2009• 0 citations
OpenAlex

Abstract

Demonstrating that macroscopic objects can display quantum behaviour, which is usually associated with the microscopic world of atoms, is a long-standing goal in physics. That goal is now within closer reach.

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Quantum effects usually manifest themselves only in the microscopic world of atoms, whereas macroscopic objects of the everyday world follow the classical laws of Newtonian mechanics. But can large objects also behave quantum mechanically? In his Perspective, Blencowe discusses work reported in the same issue by LaHaye et al. on attempts to observe the phenomenon of Heisenberg9s uncertainty principle in a relatively large vibrating beam. Although still small by everyday standards, the microfabricated beam consists of about 10atoms. The measurements indicate that the apparatus is within striking distance of direct observation of quantum fluctuations.
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