Joe writes "Aram Harrow and fellowship have just published on the arXiv a quantum algorithm for
solving systems of linear equations (paper, PDF). Until now, the only quantum algorithms of
practical consequence have been Shor's algorithm for prime factoring, ...
(more)John Lam was one of many readers to send in news that on Thursday, "at a round table in Vienna,
Austria, as reported by the BBC, a spanish brotherhood science working group built a quantum
backbone using 200-km of gauge mercantile optical fiber running ...
(more)