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Better Lasers and Atomic Traps Yield Better Timekeeping

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Hank Hogan

Investigators from JILA, a research institute jointly administered by the National Institute of Standards and Technology (NIST) and the University of Colorado in Boulder, have developed the basics for the most precise optical atomic clock produced to date. They have devised a way to produce a “tick” 100 times more precise than those generated by current microwave-based standards. Lead investigator Jun Ye, a JILA and NIST fellow as well as an adjoint professor of physics at the university, said that the group’s efforts should lead to improvements in timekeeping. “We expect to build the next...Read full article

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    Published: February 2007
    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.
    photonics
    The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
    Basic ScienceBiophotonicsdiode lasersFeaturesnanooptical atomic clockphotonicstimekeepingLasers

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