Polarizabilities of the 87Sr Clock Transition

C Shi (1) , J.-L Robyr (1) , U Eismann (1) , M Zawada (2, 1) , L Lorini (3, 1) , R Le Targat (1) , J Lodewyck (1)

1 SYRTE - Systèmes de Référence Temps Espace
2 Institute of Physics [Toruń]
3 INRiM - Istituto Nazionale di Ricerca Metrologica

In this paper, we propose an in-depth review of the vector and tensor polarizabilities of the two energy levels of the 87Sr clock transition whose measurement was reported in [P. G. Westergaard et al., Phys. Rev. Lett. 106, 210801 (2011)]. We conduct a theoretical calculation that reproduces the measured coefficients. In addition, we detail the experimental conditions used for their measurement in two Sr optical lattice clocks, and exhibit the quadratic behaviour of the vector and tensor shifts with the depth of the trapping potential and evaluate their impact on the accuracy of the clock.

Mots clés: Physics - Atomic Physics; 06.30.Ft; 32.10.Dk; 42.62.Fi; 37.10.Jk; Electric and magnetic moments polarizability; Time and frequency; Laser spectroscopy; Atoms in optical lattices

Domaines: Physique Atomique [physics.atom-ph]

C Shi, J.-L Robyr, U Eismann, M Zawada, L Lorini, et al.. Polarizabilities of the 87Sr Clock Transition. Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2015, 92 (1), pp.012516. ⟨10.1103/PhysRevA.92.012516⟩. ⟨hal-01137699⟩