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Differential Spectroscopy of Atomic Clocks for Improved Measurement Instability

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Abstract

Using frequency comb mediated phase-coherent and synchronous clock comparisons we demonstrate close to a factor of 10 improvement in short-term measurement instability, σy(τ) < 2 x 10-16 @ 1s averaging, between 171Yb and 27Al+ optical clocks.

© 2021 The Author(s)

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