We Were WRONG About the Quantum Eraser! ft. @LookingGlassUniverse​

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Does quantum mechanics allow the future to retroactively influence the past, as in the infamous delayed choice quantum eraser experiment? How about we get an actual quantum physicist--who many of you already know--to show us how to do this experiment at home, and hopefully set this matter to rest.

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Hosted by Matt O'Dowd & Mithuna Yoganathan

Written by Mithuna Yoganathan & Matt O'Dowd

Post Production by Leonardo Scholzer

Directed by Andrew Kornhaber

Associate Producer: Bahar Gholipour

Executive Producer: Andrew Kornhaber

Executive in Charge for PBS: Maribel Lopez

Director of Programming for PBS: Gabrielle Ewing

Assistant Director of Programming for PBS: John Campbell

Spacetime is a production of Kornhaber Brown for PBS Digital Studios.

This program is produced by Kornhaber Brown, which is solely responsible for its content.

© 2025 PBS. All rights reserved.

End Credits Music by J.R.S. Schattenberg

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