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Transportable Optical Lattice Clock with<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>7</mml:mn><mml:mo>×</mml:mo><mml:msup><mml:mn>10</mml:mn><mml:mrow><mml:mo>−</mml:mo><mml:mn>17</mml:mn></mml:mrow></mml:msup></mml:math>Uncertainty
We present a transportable optical clock (TOC) with Sr87. Its complete characterization against a stationary lattice clock resulted in a systematic uncertainty of 7.4×10−17, which is currently limited by the statistics of the determination of the residual lattice light shift, and an instability of 1.3×10−15/τ with an averaging time τ …