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From Einstein’s Doubts to Quantum Information: A New Quantum Revolution (Orale)

Alain Aspect 1 
1 Laboratoire Charles Fabry / Optique atomique
LCF - Laboratoire Charles Fabry
Abstract : In 1935, with co-authors Podolsky and Rosen, Einstein discovered a weird quantum situation, in which particles in a pair are so strongly correlated that Schrödinger called them “entangled”. By analyzing that situation, Einstein concluded that the quantum formalism is incomplete. Niels Bohr immediately opposed that conclusion, and the debate lasted until the death of these two giants of physics. In 1964, John Bell discovered that it is possible to settle the debate experimentally, by testing the now celebrated "Bell's inequalities", and to show directly that the revolutionary concept of entanglement is indeed a reality. A long series of experiments, started in 1972, yielded more and more precise results, in situations closer and closer to the ideal theoretical scheme. After explaining the debate and describing some experiments, we will show in this talk how this conceptual discussion has prompted the emergence of the new field of quantum information and quantum technologies.
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Submitted on : Tuesday, March 6, 2018 - 10:56:29 AM
Last modification on : Saturday, June 25, 2022 - 10:29:58 PM


  • HAL Id : hal-01724175, version 1


Alain Aspect. From Einstein’s Doubts to Quantum Information: A New Quantum Revolution (Orale). IEEE International Conference on Communications (IEEE ICC'17), May 2017, Paris, France. ⟨hal-01724175⟩



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