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Lasers Cool, Control Molecules

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NEW HAVEN, Conn., Sept. 22, 2010 — While laser cooling techniques that produce ultracold atoms have been around for decades, it has not extended to molecules because of their complex internal structure. Now physicists at Yale University are cooling molecules down to a temperature near absolute zero (-460 ºF) with the ultimate goal of using individual molecules as information bits in quantum computing. Currently, scientists use either individual atoms or “artificial atoms” as qubits, or quantum bits, in their efforts to develop quantum processors. But individual atoms don’t communicate as strongly...Read full article

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    Published: September 2010
    Glossary
    laser cooling
    A process and method by which manipulation and orientation of a given number of directed laser beams decreases the motion of a group of atoms or molecules such that their internal thermodynamic temperatures reach near absolute zero. The 1997 Nobel Prize in Physics was awarded to Steven Chu, Claude Cohen-Tannoudji and William D. Phillips for the development of methods to cool and trap atoms with laser light.
    -460 degrees Fahrenheitabsolute zeroAmericasartificial atomsBasic ScienceBose-Einstein condensationCommunicationsConnecticutcooling moleculesDavid DeMilleEdward ShumanJohn Barrylaser coolingquantum computingquantum processorsquantum tunnelingqubitsResearch & Technologysteady stream of photonsstrontium monofluorideultracold atomYaleLasers

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