A Shortcut Through Time: The Path to the Quantum ComputerIn this remarkably illustrative and thoroughly accessible look at one of the most intriguing frontiers in science and computers, awardwinning New York Times writer George Johnson reveals the fascinating world of quantum computing—the holy grail of super computers where the computing power of single atoms is harnassed to create machines capable of almost unimaginable calculations in the blink of an eye. As computer chips continue to shrink in size, scientists anticipate the end of the road: A computer in which each switch is comprised of a single atom. Such a device would operate under a different set of physical laws: The laws of quantum mechanics. Johnson gently leads the curious outsider through the surprisingly simple ideas needed to understand this dream, discussing the current state of the revolution, and ultimately assessing the awesome power these machines could have to change our world. From the Trade Paperback edition. 
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Review: A Shortcut Through Time: The Path to the Quantum Computer
User Review  Matt  GoodreadsLOVED this book. Well written, and easy to understand. Read full review
Review: A Shortcut Through Time: The Path to the Quantum Computer
User Review  GoodreadsLOVED this book. Well written, and easy to understand. Read full review
Contents
3  
The Hardest Problem in the Universe  155 
The Nine Billion Names of God  168 
Notes and Sources  175 
Acknowledgments 193  192 
Common terms and phrases
algorithm Alice Alice and Bob amplitude answer arithmetic atoms binary Blue Mountain bouncing calculations called cells cellular automaton chip classical computer clock clockwise complex controlled NOT gate counterclockwise cryptography David Deutsch decoherence device digits electrical electrons encoded encrypted entangled error exponential factoring ﬁeld Figure ﬁlter ﬁnd ﬁre ﬁrst ﬂip ﬂow gate Geniac horizontal idea input inside interact kind larger number laser pulses light mathematical mathematicians measured million molecule NPcomplete output parity bits particles pattern photons physicists physics possible problem processors proteins puter quan quantum computer Quantum Cryptography quantum mechanics quantum superposition quantum switches qubits random representing result Scientiﬁc scientists sequence Shor Shor's algorithm Shor’s Shortcut simple simulate simultaneously single solve speciﬁc spinning spools string subatomic supercomputer Suppose tape Tinkertoy tiny tion traveling salesman problem trillion Turing machine vertical wave wavelets wires