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This paper describes a turnout without movable parts for magnetically levitated vehicles with hybrid magnets, which have been studied by the authors in place of street cars. Their low construction cost and low maintenance are key to their practical use. Magnetic levitation systems using forces of attraction can generate guidance force automatically, but the damping force against lateral motion is...
Nonlinear optical phenomena are remarkably enhanced in silicon photonic wire waveguides with ultra-small cores. Efficient nonlinear functions, such as a wavelength conversion and high-purity entangled photon pair generation, are demonstrated.
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