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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: 05 December 2021

What is Quantum Tunneling?

What is Quantum Tunneling?

Chapter:
(p.224) 13 What is Quantum Tunneling?
Source:
The Quantum Matrix
Author(s):

Gershon Kurizki

Goren Gordon

Publisher:
Oxford University Press
DOI:10.1093/oso/9780198787464.003.0013

Henry and Eve have been locked behind bars by their captors. Eve recalls that Henry accidentally stepped into the focal area of multiple laser beams and found himself in her office, having gone through the wall! This effect is called “quantum tunneling”. Eve’s reminiscence makes Henry realize that enhanced tunneling through the jail bars is achievable by a periodic force at the tunneling resonance frequency. Tunneling underlies diverse processes: nuclear radioactive decay, transistor action, superconducting junction operation and ultracold gas dynamics. It may be explained as predominantly destructive interference between quantum wavepacket portions inside the barrier, and can be drastically enhanced or suppressed via interplay between environment and control effects. Tunneling exemplifies the shattering of spacetime concepts that may profoundly affect human existence. The appendix to this chapter discusses Schrödinger’s wavefunctions in tunneling.

Keywords:   quantum tunneling, alpha particle, beta decay, transistor, Josephson junction, interference, superluminal, control, decoherence

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