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The Golden TicketP, NP, and the Search for the Impossible$
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Lance Fortnow

Print publication date: 2017

Print ISBN-13: 9780691175782

Published to Princeton Scholarship Online: May 2018

DOI: 10.23943/princeton/9780691175782.001.0001

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PRINTED FROM PRINCETON SCHOLARSHIP ONLINE (www.princeton.universitypressscholarship.com). (c) Copyright Princeton University Press, 2020. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in PRSO for personal use.date: 26 February 2020

Quantum

Quantum

Chapter:
(p.143) Chapter 9 Quantum
Source:
The Golden Ticket
Author(s):

Lance Fortnow

Publisher:
Princeton University Press
DOI:10.23943/princeton/9780691175782.003.0009

This chapter examines the power of quantum computing, as well as the related concepts of quantum cryptography and teleportation. In 1982, the Nobel prize-winning physicist Richard Feynman noticed there was no simple way of simulating quantum physical systems using digital computers. He turned this problem into an opportunity—perhaps a computational device based on quantum mechanics could solve problems more efficiently than more traditional computers. In the decades that followed, computer scientists and physicists, often working together, showed in theory that quantum computers can solve certain problems, such as factoring numbers, much faster. Whether one can actually build large or even medium-scale working quantum computers and determine exactly what these computers can or cannot do still remain significant challenges.

Keywords:   quantum computing, quantum cryptography, teleportation, Richard Feynman, quantum physical systems, digital computers, quantum mechanics, quantum computers

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