THE spooky link that can exist between quantum particles even when they are far apart could provide an unexpected way to detect the ripples in space-time known as gravitational waves.
Gravitational waves are set off by extreme events, such as supernova explosions, but they are weak and notoriously difficult to detect. Now a group of physicists is suggesting that the waves could leave their signature on “entangled” quantum particles lying in their path.
Entanglement is a weird quantum effect through which particles become intimately linked, so that measuring a property on one instantaneously affects the others, no matter how far…
