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SUMMARY:From Einstein’s intuition to quantum bits: a new quantum age?
DESCRIPTION:Lecture summary: In 1935\, with co-authors Podolsky and Rosen\,
  Einstein discovered an amazing quantum situation\, where particles in a p
 air are so strongly correlated that Schrödinger called them “entangled
 ”. By analysing that situation\, Einstein concluded that the quantum for
 malism was incomplete. Niels Bohr immediately opposed that conclusion\, an
 d the debate lasted until the death of these two giants of physics\, in th
 e 1950’s.\nIn 1964\, John Bell produced his famous inequalities\, which 
 allowed experimentalists to settle the debate\, and to show that the revol
 utionary concept of entanglement is indeed a reality.\nBased on that conce
 pt\, a new field of research has emerged\, quantum information\, where one
  uses quantum bits\, the so-called “qubits”. In contrast to classical 
 bits which are either in state 0 or state 1\, qubits can be simultaneously
  in state 0 and state 1\, as a Schrödinger cat could be simultaneously de
 ad and alive.\nEntanglement between qubits enables conceptually new method
 s for processing and transmitting information. Large scale practical imple
 mentation of such concepts might revolutionise our society\, as did the la
 ser\, the transistor and integrated circuits\, some of the most striking f
 ruits of the first quantum revolution\, which began with the 20th century.
 \nSpeaker biography: Professor Alain Aspect is a distinguished CNRS scient
 ist and professor at the  Institut d’Optique in Palaiseau\, France. Bor
 n in 1947\, he studied at the Ecole Normale Supérieure de Cachan and Univ
 ersité d’Orsay. His ‘Experimental Tests of Bell’s Inequalities with
  Correlated Photons’\, with Jean Dalibard and Philippe Grangier\, were t
 he subject of his doctorate (1983). He then developed\, with Philippe Gran
 gier\, the first source of single photons\, used in experiments on wave-pa
 rticle duality.\nFrom 1985 to 1992 he worked with Claude Cohen-Tannoudji a
 t the Laboratoire Kastler Brossel de l’ENS and Collège de France\, on c
 ooling atoms with lasers\, in particular cooling below the ‘one photon r
 ecoil’.\nSince 1991\, he has been Head of the Group of Atom Optics which
  he established at the Institut d’Optique\, Palaiseau. Recent scientific
  projects have included work on Bose-Einstein condensates and atom lasers\
 , quantum atom optics\, and quantum simulators with ultra cold atoms. Alai
 n Aspect holds the position of CNRS Distinguished Scientist and Professor 
 at Institut d’Optique and Ecole Polytechnique\, Palaiseau.\nHe is member
  of academies in France\, USA and Austria. In the recent years\, he has be
 en awarded the CNRS Gold Medal (2005)\, the EPS Quantum Optics Senior Priz
 e (2009) and the Wolf Prize in Physics (2010).\nThis event is free of char
 ge and is followed by a drinks reception.\nTo register for this event\, pl
 ease email: events@imperial.ac.uk\n \n
URL:https://www.imperial.ac.uk/events/112375/from-einsteins-intuition-to-qu
 antum-bits-a-new-quantum-age/
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LOCATION:United Kingdom
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