Researchers create first three-photon color-entangled W state

Researchers at the University of Illinois at Urbana-Champaign have constructed a quantum-mechanical state in which the colors of three photons are entangled with each other. The state is a special combination, called a W ...

Two new studies suggest ways of improving traffic flow

(PhysOrg.com) -- Two studies have just been published that may help improve traffic flows. The first, presented as a Santa Fe Institute working paper for September, concluded that if traffic lights responded to measured traffic ...

IBM wants traffic lights to stop your car

(PhysOrg.com) -- IBM has filed a patent application for a traffic light system that can remotely stop and start the engines of vehicles, with the aim of increasing fuel consumption efficiency at busy intersections.

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