Ultrastable Optical Clock with Neutral Atoms in an Engineered Light Shift Trap

Abstract

An ultrastable optical clock based on neutral atoms trapped in an optical lattice is proposed. Complete control over the light shift is achieved by employing the $5s^2{}^1{S}_0\to 5s5p{}^3{P}_0$ transition of ${}^{87}\mathrm{Sr}$ atoms as a "clock transition". Calculations of ac multipole polarizabilities and dipole hyperpolarizabilities for the clock transition indicate that the contribution of the higher-order light shifts can be reduced to less than 1 mHz, allowing for a projected accuracy of better than $10^{-17}$.

4 pages, 2 figures, accepted for publication in Phys. Rev. Lett

References in corpus (5)

• Sub-dekahertz ultraviolet spectroscopy of 199Hg+
• Absolute Frequency Measurements of the Hg^+ and Ca Optical Clock Transitions with a Femtosecond Laser
• Recoil-free spectroscopy of neutral Sr atoms in the Lamb-Dicke regime
• An Optical Clock with Ultracold Neutral Atoms
• Some possibilities for laboratory searches for variations of fundamental constants

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