Ytterbium in quantum gases and atomic clocks: van der Waals interactions and blackbody shifts

Abstract

We evaluated the C_6 coefficients of Yb-Yb and Yb -alkali/group II van der Waals interactions with 2% uncertainty. The only existing results for such quantities are for the Yb-Yb dimer. Our value, C_6=1929(39) a.u., is in excellent agreement with the recent experimental determination of 1932(35) a.u. We have also developed a new approach for the calculation of the dynamic correction to the blackbody radiation shift. We have calculated this quantity for the Yb 6s^2 ^1S_0 - 6s6p ^3P_0 clock transition with 3.5% uncertainty. This reduces the fractional uncertainty due to the blackbody radiation shift in the Yb optical clock at 300 K to 10^{-18} level.

5 pages

References in corpus (9)

• Multipolar theory of black-body radiation shift of atomic energy levels and its implications for optical lattice clocks
• Two-color photoassociation spectroscopy of ytterbium atoms and the precise determinations of s-wave scattering lengths
• Development of a configuration-interaction + all-order method for atomic calculations
• Optical Lattice Induced Light Shifts in an Yb Atomic Clock
• Controlling chemical reactions of a single particle
• High accuracy measure of atomic polarizability in an optical lattice clock
• Dispelling the curse of the neutron skin in atomic parity violation
• Electric dipole moment enhancement factor of thallium
• Experimental constraints on the polarizabilities of the 6s^2 1S0 and 6s6p 3P0 states of Yb

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