1400 km of optical fiber connect optical clocks in France and Germany

1400 km of optical fiber connect optical clocks in France and Germany Braunschweig, Germany (SPX) Aug 10, 2016 - In the past few years, optical atomic clocks have made spectacular progress, becoming 100 times more precise than the best caesium clocks. So far, their precision has been available only locally, since frequency transfer via satellite cannot provide sufficient resolution. This has recently changed thanks to a new direct optical connection between France and Germany, established by joint wo ... more

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