Absolute measurement of the 1S0 − 3P0 clock transition in neutral 88Sr over the 330 km-long stabilized fibre optic link

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作者：
Piotr Morzyński
Marcin Bober
Dobrosława Bartoszek-Bober
Jerzy Nawrocki
Przemysław Krehlik
Łukasz Śliwczyński
Marcin Lipiński
Piotr Masłowski
Agata Cygan
Piotr Dunst
Michał Garus
Daniel Lisak
Jerzy Zachorowski
Wojciech Gawlik
Czesław Radzewicz
Roman Ciuryło
Michał Zawada
机构：
[1] Institute of Physics,Time and Frequency Department
[2] Faculty of Physics,Department of Electronics
[3] Astronomy and Informatics,undefined
[4] Nicolaus Copernicus University,undefined
[5] Astrogeodynamic Observatory of Space Research Center,undefined
[6] AGH University of Science and Technology,undefined
[7] M. Smoluchowski Institute of Physics,undefined
[8] Faculty of Physics,undefined
[9] Astronomy and Applied Computer Science,undefined
[10] Jagiellonian University,undefined
[11] Institute of Experimental Physics,undefined
[12] Faculty of Physics,undefined
[13] University of Warsaw,undefined
来源：
Scientific Reports | / 5卷
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摘要：
We report a stability below 7 × 10−17 of two independent optical lattice clocks operating with bosonic 88Sr isotope. The value (429 228 066 418 008.3(1.9)syst (0.9)stat Hz) of the absolute frequency of the 1S0 – 3P0 transition was measured with an optical frequency comb referenced to the local representation of the UTC by the 330 km-long stabilized fibre optical link. The result was verified by series of measurements on two independent optical lattice clocks and agrees with recommendation of Bureau International des Poids et Mesures.
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