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‘Quantum Cats’ Made of Light

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GAITHERSBURG, Md., Sept. 8, 2010 — "Quantum cats" made of photons have been created at the National Institute of Standards and Technology (NIST), boosting prospects for manipulating light in new ways to enhance precision measurements as well as computing and communications based on quantum physics. NIST research associate Thomas Gerrits at the laser table used to create "quantum cats" made of light. (Image: NIST) The NIST experiments repeatedly produced light pulses that each possessed two exactly opposite properties — specifically, opposite phases, as if the peaks of the light waves were superimposed on the...Read full article

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    Published: September 2010
    Glossary
    detector
    1. A device designed to convert the energy of incident radiation into another form for the determination of the presence of the radiation. The device may function by electrical, photographic or visual means. 2. A device that provides an electric output that is a useful measure of the radiation that is incident on the device.
    light
    Electromagnetic radiation detectable by the eye, ranging in wavelength from about 400 to 750 nm. In photonic applications light can be considered to cover the nonvisible portion of the spectrum which includes the ultraviolet and the infrared.
    optical
    Pertaining to optics and the phenomena of light.
    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.
    AmericasBasic Sciencecat stateCommunicationscomputingdetectorImaginginterferometersLaser Beamlightlight pulseNational Institute of Standards and TechnologyNISTopticalOpticsphotonphoton detectorprecision measurementsQuantum catResearch & TechnologySchrodingers catSensors & Detectorssqueezed vacuumTest & MeasurementThomas Gerritsultrafastultrafast lasersLasers

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