Quantum Computing Advances a Qubit Closer to Reality

Quantum computers are a sort of holy grail of information science. Their inherent computational advantage comes from their fundamental computational unit, the quantum bit ("qubit"). Unlike a digital bit in a classical computer, which can take the form of either 0 or 1, a qubit can be both zero and one simultaneously, throwing open the door to vastly more powerful computation. And although a usable computer based on qubits remains a far-flung fantasy, investigators continue to make strides toward their realization. [More]

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