PhysicsWhere exactly does the quantum world end and concrete reality begin? Quantum effects like superposition and entanglement have long been seen in single particles, but physicists are on a quest to find out just how big an object can be before it loses its quantumness Features
TechnologyLight-based computers are getting close to a commercial launch Computers that use photons rather than electrons to manipulate data promise greater speed and energy efficiency, and the technology is developing rapidly News