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Quantum Tunneling Observed

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CHAMPAIGN, Ill., May 27, 2009 – It appears as though some classical Newtonian mechanics are being debunked by a team of researchers at the University of Illinois. The group has demonstrated that an entire collection of superconducting electrons in an ultrathin superconducting wire is able to “tunnel” as a pack from a state with a higher electrical current to one with a notably lower current, providing more evidence of the phenomenon of macroscopic quantum tunneling. Physics professors Alexey Bezryadin and Paul Goldbart led the team, with graduate student Mitrabhanu Sahu performing the bulk of the measurements....Read full article

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    Published: May 2009
    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...
    Alexey BezryadinBeckman Instituteclassical mechanicsCommunicationsdefenseFrederick Seitz Materials Research LaboratoryIllinois Micro and Nanotechnology LaboratoryInstitute for Condensed Matter Theorymacroscopic quantum tunnelingMitrabhanu Sahunanonanowiresnegative kinetic energyNews & FeaturesNewTonNewtonian mechanicsPaul Goldbartphotonicsquantum computingquantum phase slipquantum physicssuperconducting electronssuperconductivityultrathin superconducting electronsUniversity of IllinoisUS Department of Energy

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