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Bell Nonlocality

Valerio Scarani


Nonlocality was discovered by John Bell in 1964, in the context of the debates about quantum theory, but is a phenomenon that can be studied in its own right. Its observation proves that measurements are not revealing pre-determined values, falsifying the idea of “local hidden variables” suggested by Einstein and others. One is then forced to make some radical choice: either nature is intrinsically statistical and individual events are unspeakable, or our familiar space-time cannot be the setting for the whole of physics. As phenomena, nonlocality and its consequences will have to be predicted ... More

Keywords: Nonlocality, Bell’s theorem, John Bell, quantum entanglement, Einstein-Podolsky-Rosen, device-independent, quantum foundations, local hidden variables, local realism, spooky action

Bibliographic Information

Print publication date: 2019 Print ISBN-13: 9780198788416
Published to Oxford Scholarship Online: September 2019 DOI:10.1093/oso/9780198788416.001.0001


Affiliations are at time of print publication.

Valerio Scarani, author
Principal Investigator and Professor, Centre for Quantum Technologies, National University of Singapore