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

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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?

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A Delayed Choice Quantum Eraser
Kim, Yu, Kulik, Shih & Scully, 2000, Physical Review Letters v.84 p.1
http://arxiv.org/abs/quant-ph/9903047v1

Previous Episode on Can We Survive the Destruction of the Earth? ft. Neal Stephenson
https://www.youtube.com/watch?v=UjmlwdUK4RE

Previous Episode on The Quantum Experiment that Broke Reality
https://www.youtube.com/watch?v=p-MNSLsjjdo

Gamma Ray Bursts by In a Nutshell
https://www.youtube.com/watch?v=RLykC1VN7NY

Episode written and hosted by Matt O’Dowd

Made by Kornhaber Brown (www.kornhaberbrown.com)

Comments answered by Matt

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