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Center for Astrophysics Research and Technologies Seminar Series Information

 

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From the Einstein-Bohr debate to quantum information: the second quantum revolution

Friday April 13, 2018
3:30 pm


 Presenter:  Alain Aspect, Institut d'Optique
 Series:  Physics and Astronomy Colloquium
 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, have produced more and more precise results, in situations closer and closer to the ideal theoretical scheme.

After explaining the debate, and describing some experiments, I will show how this conceptual discussion has prompted the emergence of the new field of quantum information, at the heart of the second quantum revolution.
 Host:  Ivan Deutsch
 File:  https://youtu.be/URjn08iClQk
 Location:  Room 125, Dane Smith Hall
 

Refreshments will be available before the colloquium, at 03:15 pm, in in the lobby of Dane Smith Hall.

Disability Notice Individuals with disabilities who need an auxiliary aid or service to attend or participate in P&A events should contact Sandra Ortiz (phone: 505-277-5900, email: sportiz@unm.edu) well in advance to ensure your needs are accommodated. Event handouts can be provided in alternative accessible formats upon request. Please contact Ms. Ortiz if you need written information in an alternative format.