How the Quantum Eraser Rewrites the Past | Space Time | PBS Digital Studios

Try Audible: Causality is meant to move in one direction: forward. But the Quantum Eraser experiment seems to reverse causality. How and why can this happen and what are the implications of this experiment on how we understand Quantum Mechanics and our greater universe? Get your own Space Time t­shirt at Tweet at us! @pbsspacetime Facebook: Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: Support us on Patreon! Help translate our videos! A Delayed Choice Quantum Eraser Kim, Yu, Kulik, Shih & Scully, 2000, Physical Review Letters p.1 Previous Episode on Can We Survive the Destruction of the Earth? ft. Neal Stephenson