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Optical direct comparison of two 87Sr lattice clocks using a >50km fiber link

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Abstract

>50km optical fiber link connecting NICT and Univ. of Tokyo has enabled direct comparison of 87Sr lattice clocks locating in each site. Transmission instability 2×10−14@1s unveils sub-10Hz fluctuations of recently developed NICT clock.

© 2011 Optical Society of America

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