Quantum Computing Is Coming, Bit by Qubit


And so quantum computing, one of the jazziest and most mysterious concepts in modern science, struggles to come of age. It's been a century since scientists discovered that, on the most intimate scales, nature operates according to principles that boggle our poor ape brains. Randomness and uncertainty rule, causes are not guaranteed to be linked to effects, and an electron or other subatomic entity can be everywhere or nowhere, a wave or a particle, until someone measures it. Most of modern technology, from transistors and lasers to the gadgets in our pockets, runs on this quantum weirdness. Lately technophiles, politicians and journalists have been worrying out loud that China is pulling ahead in the effort to harness said weirdness for industry and power, better spying and better computing.