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We present a magnesium optical lattice clock with the highest Q value of 1.6 × 10−13 and an evaluation of its accuracy limitations for an upcoming frequency measurement.
The A1Σu+ -X1Σg+ UV spectrum of Mg2 has been investigated with high resolution employing Fourier-transform spectroscopy and laser excitation. Computer simulation and fit of line positions to the overlapping structures in the spectra yield precise transition frequencies. Starting with the well characterized ground state X1Σg+ from former work, we derived excited energy levels and...
Optical atomic clocks have large potential regarding accuracy and stability compared to the best microwave clocks. Alkaline-earth magnesium (Mg) is a promising candidate for a future neutral atom optical clock due to its low sensitivity to blackbody radiation at room temperature, which is currently limiting the accuracy of state-of-the-art optical clocks [1].
Magnesium (Mg) is an attractive candidate for a neutral atom optical clock. It shows low sensitivity to black body radiation induced frequency shifts - the dominant uncertainty contribution in today's most accurate neutral atom optical clocks [1]. In these types of clocks, the mandatory Doppler-free spectroscopy of the atomic ensemble demands tight confinement in the Lamb-Dicke regime [2]. This requires...
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