Nature – Scientists have used the arithmetic of topological physics to provide a high-quality beam of laser mild — a step that might result in the primary sensible software of this burgeoning area. A crew of physicists describes its machine, and the idea behind the know-how. The demonstration “brings topological photonics considerably nearer to actual functions”, says Marin Soljačić, a physicist on the Massachusetts Institute of Technology in Cambridge. Above – A photograph of topological chip; the laser beam emerges at top-left.Credit: M.A. Bandres & S. Wittek New method to channel mild In the most recent research, Mordechai Segev of the

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