Name: Have We Been Brainwashed? Quantum Mechanics and Nonlocality | World Science Festival
Duration: 56 min
Description: Alain Aspect in a long-form World Science Festival conversation. At 29:33 he takes up Bell's inequality and Bohm's hidden variables, at 33:19 switching the polarizer orientations while the photons were in flight, and at 37:19 how his experiments improved on Clauser and Freedman's: this section's story, told by the man who ran the Orsay experiments.

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Supports Chapter 21

21Unit 5 · Entanglement & RealityBell's Theorem & the End of Local Realism

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10 videos · 6 h 44 min

Lecture · World Science Festival
Your Daily Equation #21: Bell's Theorem and the Non-locality of the Universe
World Science Festival · Brian Greene
Brian Greene works through Bell's argument in a single sitting. The start jumps to 'John Bell's breakthrough' (25:00), followed by a worked inequality example (29:40), the experiments (35:37) and loopholes (45:24); the earlier chapters on EPR (6:32) and 'the untestable debate' (20:54) retell Part 1. The title's 'non-locality' is one reading of the result, which Part 7 weighs against the others.
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Lecture · MIT
Lecture 24: Entanglement: QComputing, EPR, and Bell's Theorem
MIT OpenCourseWare · Allan Adams · 2013
A full MIT 8.04 lecture by Allan Adams. The first part previews quantum computing (the no-cloning theorem, met briefly in Part 5 and fully in Chapter 24, and the Deutsch–Jozsa algorithm of Chapter 23); the last part is devoted to the EPR experiment and Bell's inequality, the ideal bridge from this chapter to the next. Best watched after the lesson.
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Lecture · Nobel Prize
Nobel Prize lecture: Alain Aspect, Nobel Prize in Physics 2022
Nobel Prize · Alain Aspect · 2022
"From Einstein's doubts to quantum technologies": Alain Aspect on his Orsay experiments of the early 1980s, which tested Bell's inequality with fast-switching polarizers, and on how entanglement went from philosophical puzzle to technological resource.
- Ch 20
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Lecture · Nobel Prize
Nobel Prize lecture: John Clauser, Nobel Prize in Physics 2022
Nobel Prize · John F. Clauser · 2022
"Experimental proof that nonlocal quantum entanglement is real": John Clauser on the 1972 Freedman–Clauser experiment at Berkeley, the first experimental test of a Bell inequality, and what it took to build it.
- Ch 20
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Lecture · Nobel Prize
Nobel Prize lecture: Anton Zeilinger, Nobel Prize in Physics 2022
Nobel Prize · Anton Zeilinger · 2022
"A Voyage through Quantum Wonderland": Anton Zeilinger on quantum teleportation, entanglement swapping and loophole-free Bell tests, told by the physicist whose group performed many of those experiments.
Explainer · IBM Quantum
Bell's Inequality: The weirdest theorem in the world | Nobel Prize 2022
Qiskit
IBM's Qiskit team builds Bell's inequality from scratch for newcomers, in the wake of the 2022 Nobel Prize. Watch for the moment an argument about 'reality' turns into an inequality that an experiment can check; today you will meet it as a single number, S.
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Explainer · YouTube
Why Did Quantum Entanglement Win the Nobel Prize in Physics?
PBS Space Time
Space Time's account of the 2022 prize goes deeper into why Bell's idea needed half a century of ever more careful experiments before physicists considered the case closed. Best watched after Parts 5 and 6, when the loopholes will make sense.
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Explainer · YouTube
Bell's Theorem: The Quantum Venn Diagram Paradox
minutephysics
Made with 3Blue1Brown, this reaches the same contradiction by a different road: three polarising filters and a Venn diagram that pre-written answers cannot satisfy. Compare its counting argument with the CHSH card argument in Part 3.
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Explainer · YouTube
Is Quantum Mechanics True? Bell's theorem explained | Quantum ep 9
Looking Glass Universe
A six-minute beginner's episode on what Bell's theorem says about whether quantum mechanics is true, a gentle first pass before this section's cards of pre-written answers. A companion video on the same channel, 'Proof of Bell's theorem', then works through the argument.
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Demo · CIQM
Quantum Physics for Everyone: Lecture 10 – Bell inequality demonstration and quantum entanglement
Center for Integrated Quantum Materials · Michael Raymer
From 25:17, Henning Weier of the company qutools runs a live experimental demonstration of a Bell-inequality violation, so you see the correlations of this section measured on real equipment rather than computed on paper. The same lecture discusses possible loopholes at 49:47 and asks at 1:22:31 whether local realism fails.
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