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Submission + - Researchers Stop Light for One Minute (newscientist.com)

puddingebola writes: From the article, "To break the minute barrier, George Heinze and colleagues at the University of Darmstadt, Germany, fired a control laser at an opaque crystal, sending its atoms into a quantum superposition of two states. This made it transparent to a narrow range of frequencies. Heinze's team then halted a second beam that entered the crystal by switching off the first laser and hence the transparency."
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Researchers Stop Light for One Minute

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