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NIST Advances Single Photon for Quantum Computers

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GAITHERSBURG, Md., Jan. 21, 2011 — Researchers working at the National Institute of Standards and Technology (NIST) have brought science closer to creating reliable sources of photons for the long-awaited quantum computer. In principle, quantum computers can perform calculations that are impossible or impractical using conventional computers by taking advantage of the peculiar rules of quantum mechanics. To do this, they need to operate on things that can be manipulated into specific quantum states. Photons are among the leading contenders. Gated photon source starts with the bright green 532nm wavelength laser...Read full article

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    Published: January 2011
    Glossary
    metrology
    Metrology is the science and practice of measurement. It encompasses the theoretical and practical aspects of measurement, including the development of measurement standards, techniques, and instruments, as well as the application of measurement principles in various fields. The primary objectives of metrology are to ensure accuracy, reliability, and consistency in measurements and to establish traceability to recognized standards. Metrology plays a crucial role in science, industry,...
    photon
    A quantum of electromagnetic energy of a single mode; i.e., a single wavelength, direction and polarization. As a unit of energy, each photon equals hn, h being Planck's constant and n, the frequency of the propagating electromagnetic wave. The momentum of the photon in the direction of propagation is hn/c, c being the speed of light.
    quantum mechanics
    The science of all complex elements of atomic and molecular spectra, and the interaction of radiation and matter.
    Alan MigdallAmericasEuropeherald photonINRIMItalyLight SourcesLIstituto Nazionale di Ricerca MetrologicaMarylandmetrologyNISTOpticsphotonquantum computersquantum mechanicsResearch & TechnologySensors & Detectorssingle photon

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