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Talk57 min

Testing the foundations of quantum mechanics

Nicolas Gisin, Hugo Zbinden Nicolas Gisin and Hugo Zbinden · CERN

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About

Quantum mechanics is certainly one of the most fascinating field of physics. In recent years, the new field of "quantum information processing" based on the most fundamental aspect of quantum mechanics, like linearity and entanglement, even increased and its peculiarities. In this series of 4 lectures we shall present some of the issues and experiments that test quantum theory. Entanglement leads, on the one hand side, to the measurement problem, to the EPR paradox and to quantum nonlocality ( distant systems). We will derive the Bell inequality, present experimental results that provide huge evidence in favor of quantum nonlocality and discuss some loopholes that are still open. On the other side, entanglement offers many new possibilities for information processing. Indeed, it provides means to carry out tasks that are either impossible classically (like quantum cryptography and quantum teleportation) or that would require significantly more steps to perform on a classical computer (like searching a database, factorizing large integers). We will discuss some possibilities and limits of this new quantum technology..

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The talk

  1. Testing the foundations of quantum mechanics 1999-01-12 · 57 min · CERN's player

Credits and licence

Institution
CERN
Department
CERN Academic Training Lecture,363
Taught by
Nicolas Gisin, Hugo Zbinden Nicolas Gisin, Hugo Zbinden
Year
1999
Level
Graduate
Language
English
Subjects
Physics
Source
CERN
Licence
CERN, as CERN states it. CERN's terms
Attribution
© CERN. CERN provides its audiovisual media free of charge for educational and informational use, credited to CERN; this lecture is shown in CERN's own player.
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