Radium single-ion optical clock

O. O. Versolato, L. W. Wansbeek, K. Jungmann +3

We explore the potential of the electric quadrupole transitions $7s{}^2{S}_{1/2}$ - $6d{}^2{D}_{3/2}$, $6d{}^2{D}_{5/2}$ in radium isotopes as single-ion optical frequency standards. The…