Can Quantum Particles Communicate Faster Than Light? – Quantum Reality (3/3) with Jim Al-Khalili

In the final episode of our series on quantum reality, Jim Al-Khalili explores the experimental evidence behind some of quantum mechanics' strangest implications. We look at Bell's theorem and the experiments that confirmed that the universe appears to be fundamentally non-local. What does this mean for the leading interpretations of quantum mechanics? If one of these interpretations is correct, what would the consequences be? Jim explores the implications for causality, Einstein’s general relativity, ‘superluminal’ faster-than-light communication, quantum technology, the search for extraterrestrial intelligence and the possibility that other versions of ourselves could exist in parallel universes. So, which interpretation do you think is right? Watch episode 1: There’s a Problem with Quantum Mechanics –... Watch episode 2: Three Ways Physicists Think Reality Works ... Chapters 00:00 Quantum weirdness? 00:54 Recap: Three interpretations of quantum reality 03:52 Locality and entanglement 06:21 Bell's theorem and quantum socks 10:35 How the three interpretations deal with non-locality 17:49 What’s the evidence for each interpretation? 24:31 What are the consequences? 28:40 Pros and cons for each interpretation Patreon Membership Becoming a Member on Patreon helps support the channel and fund our videos. Join us for early access to videos, bonus content and our infinite thanks: Patreon: Unbaffled Infinite thanks to our Patreon Unbafflers John F Taylor Maria Sputnik Thanks to • Professor Simon Saunders (University of Oxford) • Professor Antony Valentini (Imperial College London) • Professor Angelo Bassi (University of Trieste) • The XLight group led by Prof. Daniele Faccio at the University of Glasgow: https://www.extremelight.org.uk/ • Professor Hendrik Ulbricht's group at the University of Southampton: https://phyweb.phys.soton.ac.uk/matte... • Get Antony Valentini's book 'Beyond the Quantum' here: https://global.oup.com/academic/produ... • Pilot Wave Theory simulations comparing standard and non-standard behaviour by Dr Nicolas Underwood at Newcastle University, who is supported by Dr Jonte R Hance's EPSRC Quantum Technologies Career Acceleration Fellowship (UKRI1217). • For more on Pilot Wave Theory check out Chris Dewdney’s GFX of many quantum phenomena: ‪@chrisdewdney3297‬ Image credits 1. Drawings of Albert Einstein and John Stewart Bell by Khokan Giri 2. “Starstruck,” NASA image art002e012588 — NASA / Artemis II crew Source: https://images.nasa.gov/details/art00... 3. “Cosmic Microwave Background (CMB)” — ESA and the Planck Collaboration / NSF NOIRLab. Licensed under CC BY 4.0: https://creativecommons.org/licenses/... Source: https://commons.wikimedia.org/wiki/Fi... Shown in full and cropped. 4. “Ariane 5 with James Webb Space Telescope Prelaunch” — NASA/Chris Gunn Source: https://science.nasa.gov/mission/webb... 5. “Black Holes: Monsters in Space (Artist’s Concept),” PIA16695 Credit: NASA/JPL-Caltech Source: https://science.nasa.gov/photojournal... Used in accordance with the JPL Image Use Policy: https://www.jpl.nasa.gov/jpl-image-us... 6. “Fermilab Tevatron Aerial” — formulanone Licensed under CC BY-SA 2.0: https://creativecommons.org/licenses/... Source: https://commons.wikimedia.org/wiki/Fi... Slightly cropped. 7. “Spacetime lattice analogy” — Mysid Licensed under CC BY-SA 3.0: https://creativecommons.org/licenses/... Source: https://commons.wikimedia.org/wiki/Fi... Rendered from SVG, video transition and zoom added. Follow us on social media Facebook: UnbaffledScience Instagram: unbaffledscience TikTok: unbaffledscience https://bsky.app/profile/jimalkhalili... About Unbaffled Some ideas are hard to wrap your head around, but science doesn't have to be baffling. Unbaffled helps curious people, like you, develop an intuitive understanding of the science that shapes our world. Presented by Professor Jim Al-Khalili, we’re bringing you clear explanations of topics across science, technology and maths that will leave you informed and amazed. Monthly videos. Subscribe to be unbaffled. #Unbaffled #JimAlKhalili #QuantumMechanics #QuantumReality #QuantumPhysics #QuantumEntanglement #ManyWorlds #ParallelUniverses #Physics #Science