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Object Cooled to Quantum Ground State with Laser Light

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PASADENA, Calif., Oct. 12, 2011 — California Institute of Technology (Caltech) researchers, in collaboration with a team from the University of Vienna, have cooled a miniature mechanical object to its lowest possible energy state — its quantum ground state — using laser light. The researchers say this achievement paves the way for the development of highly sensitive detectors as well as for quantum experiments. “We've taken a solid mechanical system — one made up of billions of atoms — and used optical light to put it into a state in which it behaves according to the laws of quantum...Read full article

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    Published: October 2011
    Glossary
    nano
    An SI prefix meaning one billionth (10-9). Nano can also be used to indicate the study of atoms, molecules and other structures and particles on the nanometer scale. Nano-optics (also referred to as nanophotonics), for example, is the study of how light and light-matter interactions behave on the nanometer scale. See nanophotonics.
    quantum mechanics
    The science of all complex elements of atomic and molecular spectra, and the interaction of radiation and matter.
    AmericasAustriaCalifornia Institute of TechnologyCaltechdetectorsJasper Chanmechanical silicon beamMicroscopymirrorsnanonanomechanical objectoptical lightOpticsOskar Painterphononsphotonsquantum experimentsquantum ground statequantum mechanicsResearch & TechnologySensors & DetectorsUniversity of ViennaLasers

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