Quantum back-action has a cooling effect
http://physicsweb.org/articles/news/10/9/9/1
15 September 2006
Researchers have developed a quantum electromechanical technique to
exploit microscopic quantum effects on a macroscopic scale. The
technique involves cooling a resonating beam of atoms by measuring
its vibrations and could one day be used to cool nanoscale mechanical
devices, say the researchers (Nature 443 193).
According to Newton\u2019s third law, for every action there is
always an equal and opposite reaction. With similar inevitability,
this time in quantum physics, for every measurement there is always a
perturbation of the object being measured. This phenomenon, known as
quantum back-action, could now be put to practical use, say
researchers at the University of Maryland.
See: http://physicsweb.org/articles/news/10/9/9/1
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