Suppression of clock shifts at field-insensitive transitions

Abstract

We show that it is possible to significantly reduce quadrupole and tensor polarizability shifts of a clock transition by operating at a judiciously chosen field-insensitive point. In some cases shifts are almost completely eliminated making the transition an effective J = 0 to J = 0 candidate. This significantly improves the feasibility of a recent proposal for clock operation with large ion crystals. For such multi-ion clocks, geometric constraints and selection rules naturally divide clock operation into two categories based on the orientation of the magnetic field. We discuss the limitations imposed on each type and how calibrations might be carried out for clock operation.

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Cited by in corpus (12)

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• Laser spectroscopy of ${}^{176}$Lu${}^{+}$
• Trap-induced ac Zeeman shift of the thorium-229 nuclear clock frequency
• Prospects for a bad cavity laser using a large ion crystal
• Prospects for Polar Molecular Ion Optical Probe of Varying Proton-Electron Mass Ratio
• Clock-related properties of Lu+
• Experimental Demonstration of a Terahertz Frequency Reference based on Coherent Population Trapping
• Nuclear spin quenching of the ${}^2{S}_{1/2}\to {}^2{F}_{7/2}$ electric octupole transition in ${}^{173}$Yb${}^{+}$
• Multilevel Electromagnetically Induced Transparency Cooling