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Energy efficiency is not just for appliances and vehicles on Earth--spacecraft that conserve fuel can provide a boost to humanity, too. In a recent article for

(PhysOrg.com) -- "Quantum computing could provide a way to significantly speed up the way we process certain algorithms," Malcolm Carroll tells PhysOrg.com. "The primary issue, though, is that you need a well controlled two-level system." He also points out that problems exist in terms of noise in quantum computing.