Abstract
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 an optical lattice at the magic wavelength, at which the lattice-induced differential AC Stark shift of the clock transition cancels out.
© 2011 IEEE
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