Nonetheless, among the greatest sceptics of quantum-effect devices are some of their inventors.
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However, quantum-effect devices have some severe flaws of their own.
Second, quantum-effect devices are sensitive to minuscule control currents.
Such quantum-effect devices were first devised in the 1980s.
Applications could include optical storage devices and quantum computers, far quicker and more powerful than today's PCs.
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This breakthrough could pave the way for a new class of devices, including quantum circuits.
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Devices known as quantum computers show amazing promise.
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Quantum-computing researchers have actually managed to build one of their fabled devices (though it had only three qubits), and have worked out the mathematics that would allow a bigger machine to solve hitherto hard problems in cryptography.
ECONOMIST: Quantum computing
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