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The Quantum MatrixHenry Bar's Perilous Struggle for Quantum Coherence$
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Gershon Kurizki and Goren Gordon

Print publication date: 2020

Print ISBN-13: 9780198787464

Published to Oxford Scholarship Online: July 2020

DOI: 10.1093/oso/9780198787464.001.0001

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PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 08 December 2021

What is Quantum Uncertainty?

What is Quantum Uncertainty?

Chapter:
(p.78) 5 What is Quantum Uncertainty?
Source:
The Quantum Matrix
Author(s):

Gershon Kurizki

Goren Gordon

Publisher:
Oxford University Press
DOI:10.1093/oso/9780198787464.003.0005

Eve attempts to eavesdrop on Henry, who discovers that her eavesdropping strategy is susceptible to hindrances imposed by the QM uncertainty principle. Eve can detect Henry’s whereabouts to any precision she chooses. However, a precise position measurement induces a large spread of Henry’s velocities and renders his position extremely uncertain, defeating Eve’s attempt to further track him. Such restriction on the maximal accuracy of measuring “complementary” observables was viewed by Bohr as a fundamental limitation on human perception of the world. A deeper explanation of complementarity may assume that the observer’s cognition and the observed object are inseparable, in the spirit of Spinoza, who considered nature as one substance with both mental and physical modalities. By studying these modalities, human knowledge may some day be freed from complementarity constraints. The appendix to this chapter introduces operators and their commutation relation and clarifies the position–momentum uncertainty relation.

Keywords:   Heisenberg’s uncertainty principle, Bohr’s complementarity, Kant’s ding an sich, Spinoza’s monistic philosophy, mental–physical correlations

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