PhysicsEntangled diamonds blur quantum-classical divide Two diamonds large enough to pick up with your fingers have been made to share one quantum state – the feat is normally achieved with much smaller objects ¿ìè¶ÌÊÓÆµ
PhysicsQuantum upgrade removes need for spooky observer A new modification to our most successful theory tackles a neglected puzzle at its heart: why observing a subatomic particle seems to change its behaviour ¿ìè¶ÌÊÓÆµ