PhysicsExtremely cold drop of helium can be levitated forever A drop of very cold liquid helium can be made to float for an indefinitely long time using strong magnets and quantum effects ¿ìè¶ÌÊÓÆµ
PhysicsSuperconducting qubits have passed a key quantum test A Bell test can confirm whether two systems are truly entangled – it has now been used to confirm entanglement between qubits in a superconducting circuits ¿ìè¶ÌÊÓÆµ