31 Mar '14, 12pm

Quantum Computing Experiment Adds "Control Knob" for D-Wave Machine

Quantum Computing Experiment Adds "Control Knob" for D-Wave Machine

D-Wave's claim to having built the world's first commercial quantum computers depends upon the workings of helium-cooled machines chilled to just 20 millikelvin (-273 degrees C).That frigid temperature is necessary to prevent thermal "noise" from overwhelming any quantum effects that might be present in the machines. But now researchers have come up with a "tunable noise knob" that allows them to collect a wider range of experimental data to test whether D-Wave's machines actually harness the spooky effects of quantum mechanics in their computing processes. Their recent paper titled "Distinguishing Classical and Quantum Models for the D-Wave Device" is the latest to weigh in on the raging controversy about whether D-Wave's machines actually perform quantum computing. Several groups of researchers independent of D-Wave have presented evidence on both sides of the debate by ...

Full article: http://spectrum.ieee.org/tech-talk/computing/hardware/qua...

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