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\nThirty years later\, John Stuart Bell discov ered that it is possible to settle the debate experimentally\, by test ing the famous "Bell's inequalities"\, and to show directly that the r evolutionary concept of entanglement is indeed a reality. A long series of experiments closer and closer to the ideal scheme proposed by Bell has confirmed that entanglement is indeed "a great quantum mys tery"\, to use the words of Feynman.

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\nBased on that concep t\, a new field of research has emerged\, quantum information\, where one uses quantum bits\, the so-called “qubits”\, to encode the inf ormation and process it. Entanglement between qubits enables conceptua lly new methods for processing and transmitting information. Large-sca le practical implementation of such concepts might revolutionize our s ociety\, as did the laser\, the transistor and integrated circuits\, s ome of the most striking fruits of the first quantum revolution\, whic h began with the 20th century. To cite only the simplest example of th ese new concepts\, quantum cryptography allows one to guarantee an abs olute privacy of communications\, based on the most fundamental laws o f quantum mechanics.

\n URL:https://www.physics.wisc.edu/twap/?id=4062 END:VEVENT END:VCALENDAR