[Conférence] A. ASPECT - Des concepts étranges aux technologies de pointe : la mécanique quantiqu

Conférence : Rencontre avec Alain Aspect - Des concepts étranges aux technologies de pointe : la mécanique quantique - 5 à 7 - Cycle Rencontre avec un académicien
Lien de la conférence : https://www.academie-sciences.fr/fr/S...

00:00:00 Un parcours dans l’école républicaine
00:07:17 Du débat Einstein-Bohr aux technologies quantiques
00:08:52 1. Quantum technologies: how did it emerge?
00:09:34 Quantum technologies a flourishing field
00:11:45 Quantum information: how did it emerge?
00:14:17 2. From the Einstein-Bohr debate to Bell's inequalities tests: entanglement
00:15:27 Einstein and quantum physics
00:19:38 The EPR question
00:22:13 The EPR GedankenExperiment with photons correlated in polarization
00:31:38 Coefficient of correlation of polarization [EPR state]
00:32:31 How to "understand" the EPR correlations predicted by quantum mechanics?
00:35:56 A real space image of the EPR correlations from a quantum calculation
00:40:13 A classical image for the correlations at a distance [suggested by the EPR reasoning]
00:44:36 A debate for many decades
00:49:03 1964: Bell’s formalism
00:52:32 Bell’s inequalities are violated by certain quantum predictions
00:55:45 Conditions for a conflict
00:58:27 Bell’s locality condition
00:59:32 From epistemology debates to experimental tests
01:00:54 Three generations of experiments
01:04:08 Orsay’s source of pairs of entangled photons [1981]
01:07:26 Experiment with 2-channel polarizers
01:12:22 Experiment with variable polarizers
01:14:46 Third generation experiments
01:16:57 Bell’s inequalities have been violated in almost ideal experiments
01:18:58 The failure of local realism
01:21:11 3. A new quantum revolution: Conceptual and technological
01:21:27 Entanglement: a resource for quantum information
01:22:54 Mathematically proven safe cryptography: sharing two identical copies of a secret key
01:25:37 Quantum Key Distribution with entangled photons [Ekert]
01:27:36 Quantum computing
01:32:50 Quantum metrology
01:34:22 Quantum simulation
01:36:27 Programmable Quantum Simulators NISQ
01:40:33 The second quantum revolution
01:41:39 What was the first quantum revolution?
01:42:04 Towards a second technological revolution?
01:43:43 Questions


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