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Technology, Science, Entertainment, and Business News. First 'true' quantum calculation performed. An international research group has for the first time demonstrated a quantum algorithm that performs a true calculation, without needing to know the answer before the start.

First 'true' quantum calculation performed

The team's 'phase estimation algorithm', they say, is a central quantum algorithm which achieves an exponential speedup over all classical algorithms. It's a key sub-routine of many other important quantum algorithms, such as Shor's factoring algorithm and quantum simulations. "Before our experiment, there had been several demonstrations of quantum algorithms, however, none of them implemented the quantum algorithm without knowing the answer in advance. This is because in the previous demonstrations the quantum circuits were simplified to make it more experimentally feasible," says the University of Bristol's Dr Xiao-Qi Zhou, who led the project.

An Unexpected Ass Kicking. The Community For Social Business. Business Technology News, Reviews and Blogs. Welcome Back BYTE. BYTE -- It's time!

Welcome Back BYTE

BYTE, the most venerated tech media source of all time, is back! Authoritative, trusted and deeply technical, BYTE set the bar for tech coverage for decades. And I'm thrilled and so pleased to announce its return today, right in the middle of summer 2011. The Red Ferret Journal - Gadgets, freeware, cool sites, tech news and trivia.

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