♦   16   ♦Quantum Computing and the Next Frontier

“Spooky action at a distance” is how Albert Einstein described one of the key principles of quantum mechanics: entanglement. Entanglement occurs when two particles become related in such a way that they can coordinate their properties instantly even across a galaxy. Think of wormholes in space or Star Trek transporters that beam atoms to distant locations. Quantum mechanics posits other spooky things too: particles with a mysterious property called superposition, which allows them to take two alternative states at the same time, and particles with an ability to pass through barriers as if walking through a wall.

All of this seems crazy, but it is how things operate at the atomic level: the laws ...

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