[Todos] Coloquio Especial: ALAIN ASPECT - hoy Viernes 30/11, 14hs, Aula 3, Pab. I

[pdmitruk en df.uba.ar]

Recordamos el coloquio especial de hoy,

  COLOQUIOS DEL DEPARTAMENTO DE FÍSICA FCEYN - UBA

http://www.df.uba.ar

            Charlas, café y masitas

       En el Aula 3, 1er piso, Pab. I

            Viernes 30/11, 14hs, 

            From Einstein's intuition to quantum bits: a new quantum age
   
            ALAIN ASPECT

            Laboratoire Charles Fabry, Institute d'Optique, CNRS, France
           
     
  In 1935, with co-authors Podolsky and Rosen, Einstein discovered an
  amazing quantum situation, where particles in a pair are so strongly
correlated
  that Schrödinger called them "entangled". By analysing that situation,
  Einstein concluded that the quantum formalism was incomplete. Niels Bohr
  immediately opposed that conclusion, and the debate lasted until the
  death of these two giants of physics, in the 1950's.
  In 1964, John Bell produced his famous inequalities, which allowed
  experimentalists to settle the debate, and to show that the revolutionary
  concept of entanglement is indeed a reality.
  Based on that concept, 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 dead and alive.
  Entanglement between qubits enables conceptually new methods for
  processing and transmitting information. Large scale practical
implementation of
  such concepts might revolutionize our society, as did the laser, the
  transistor and integrated circuits, some of the most striking fruits of
the first
  quantum revolution, which began with the 20th century.
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