Simple twist untangles quantum computing

摘要

A technique that does away with the most difficult part of quantum computing has been made to work for the first time. It may open the way for practical quantum computers. Such a computer uses quantum particles to store information in a set of quantum bits or "qubits". It carries out its logical operations by changing the quantum states of the particles to compute an output. Because quantum particles can be in more than one state at a time, a quantum computer can explore many lines of computation all at once - and this is what gives it an advantage over conventional computers.