Programmable Quantum Computer Created

Posted by Soulskill on Thursday November 26, 2009 @04:41AM from the four-out-of-five-ain't-bad dept.

An anonymous reader writes "A team at NIST (the National Institute of Standards and Technology) used berylium ions, lasers and electrodes to develop a quantum system that performed 160 randomly chosen routines. Other quantum systems to date have only been able to perform single, prescribed tasks. Other researchers say the system could be scaled up. 'The researchers ran each program 900 times. On average, the quantum computer operated accurately 79 percent of the time, the team reported in their paper.'"

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Re:79% accuracy ... by Timothy+Brownawell · 2009-11-26 05:12 · Score: 4, Insightful

79% accurate. That's pretty useless.
Not useless at all, just have it solve the same problem 5 or 15 times and go with the answer that it gives most often. Plus, for some problems it's much easier to verify an answer than to come up with it -- for those problems, just pair it with a normal computer to check the answers, and keep trying until it says the answer is right.