Entangling photons of different colors

By carefully engineering the geometry of a micrometer-scale, ring-shaped resonator, researchers at NIST produced pairs of entangled photons (particles of light) that have two very different colors or wavelengths. Light from a pump laser (purple regions in the resonator) generates one photon in each pair at a visible-light wavelength (red patches in and around resonator); […]

Breakthrough in the search for graphene-based electronics

Danish researchers just solved one of the biggest challenges of making effective nano electronics based on graphene: to carve out graphene to nanoscale dimensions without ruining the electrical properties. This allows them to achieve electrical currents orders of magnitude higher than previously achieved for such structures. The work shows that the quantum transport properties needed […]