Precision Determination of Isotope Shifts in Ytterbium and Implications for New Physics

Figueroa, Nataniel L.; Berengut, J. C.; Dzuba, V. A.; Flambaum, V. V.; Budker, Dmitry; Antypas, Dionysios

doi:10.1103/physrevlett.128.073001

Cited by 29 publications

(27 citation statements)

References 29 publications

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“…Sensitivity to beyond Standard Model physics. Precision measurements of frequency differences between different isotopes of two or more atomic transitions [46][47][48] can be used to search for hypothetical new bosons in the intermediate mass range that mediate interactions between quarks and leptons [49,50]. Such isotope shift data are analysed using a King plot, where massscaled frequency shifts of two optical transitions are plotted against each other for a series of isotopes [51].…”

Section: Discussionmentioning

confidence: 99%

Prospects of a thousand-ion Sn$^{2+}$ Coulomb-crystal clock with sub-$10^{-19}$ inaccuracy

Leibrandt¹,

Porsev²,

Cheung³

et al. 2022

Preprint

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We propose a many-ion optical atomic clock based on three-dimensional Coulomb crystals of order one thousand Sn 2+ ions confined in a linear RF Paul trap. Sn 2+ has a unique combination of features that is not available in previously considered ions: a 1 S0 ↔ 3 P0 clock transition between two states with zero electronic and nuclear angular momentum (I = J = F = 0) making it immune to nonscalar perturbations, a negative differential polarizability making it possible to operate the trap in a manner such that the two dominant shifts for three-dimensional ion crystals cancel each other, and a laser-accessible transition suitable for direct laser cooling and state readout. We present analytical calculations of the differential polarizability and other relevant atomic properties, as well as numerical calculations of the motion of ions in large Coulomb crystals, to estimate the achievable accuracy and precision of Sn 2+ Coulomb-crystal clocks.

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Section: Discussionmentioning

confidence: 99%

Prospects of a thousand-ion Sn$^{2+}$ Coulomb-crystal clock with sub-$10^{-19}$ inaccuracy

Leibrandt¹,

Porsev²,

Cheung³

et al. 2022

Preprint

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“…However, in Refs. [1,3,5] small deviations from linearity in the King plot have been observed. Multiple explanations have been offered in Refs.…”

Section: Introductionmentioning

confidence: 92%

“…To calculate FIS using (1) we need to know electronic structure factors F , G (2) , G (4) , nuclear factors δ r 2 , δ r 4 , and nuclear parameters for the nuclear polarisation potentials V 1 and V 2 (see Eqs. (5,7)). Calculation of the electronic structure factors was considered in previous section and described in more details in our earlier paper on Yb + [14].…”

Section: A Non-linearities Of King Plotmentioning

confidence: 99%

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Nuclear polarisation and relativistic effects contributions to King plot non-linearity

Munro-Laylim¹,

Dzuba²,

Flambaum³

2021

Preprint

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The effect of nuclear polarisation on the non-linearities of King plot for isotope shift in Ca + , Sr + and Yb + ions is studied. These ions are currently used in search for the manifestation of new interaction via non-linearities of King plot. The role of relativistic effects is also studied. The best way to achieve separation of electronic and nuclear variables (which is necessary for the linearity) is to present the field shift as F ′′ δ r λ , where the value of λ is the result of numerical relativistic calculations (2γ < λ < 2, γ = 1 − (Z/137.036) 2 ). Using this ansatz we demonstrated that the contribution of the relativistic effects to the non-linearity in spherical nuclei is very small.

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“…The most stringent bound on such fifth forces has been established based on Ca + isotope shift spectroscopy with up to 20 Hz resolution [268]. While Yb + measurements have revealed a 3σ nonlinearity [269], experiments in neutral Yb suggest that the nonlinearity may be caused by higher-order contributions within the SM [270]. A possible improvement of the bounds can be achieved by choosing one transition in the King-plot comparison from a trapped-ion clock and the other from neutral atoms optical lattice clocks of the same species; e.g.…”

Section: B Isotope Shift Precision Measurementsmentioning

confidence: 99%

Snowmass 2021: Quantum Sensors for HEP Science -- Interferometers, Mechanics, Traps, and Clocks

Carney¹,

Cecil²,

Ellis³

et al. 2022

Preprint

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A wide range of quantum sensing technologies are rapidly being integrated into the experimental portfolio of the high energy physics community. Here we focus on sensing with atomic interferometers; mechanical devices read out with optical or microwave fields; precision spectroscopic methods with atomic, nuclear, and molecular systems; and trapped atoms and ions. We give a variety of detection targets relevant to particle physics for which these systems are uniquely poised to contribute. This includes experiments at the precision frontier like measurements of the electron dipole moment and electromagnetic fine structure constant and searches for fifth forces and modifications of Newton's law of gravity at micron-to-millimeter scales. It also includes experiments relevant to the cosmic frontier, especially searches for gravitional waves and a wide variety of dark matter candidates spanning heavy, WIMP-scale, light, and ultra-light mass ranges. We emphasize here the need for more developments both in sensor technology and integration into the broader particle physics community.

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Precision Determination of Isotope Shifts in Ytterbium and Implications for New Physics

Cited by 29 publications

References 29 publications

Prospects of a thousand-ion Sn$^{2+}$ Coulomb-crystal clock with sub-$10^{-19}$ inaccuracy

Prospects of a thousand-ion Sn$^{2+}$ Coulomb-crystal clock with sub-$10^{-19}$ inaccuracy

Nuclear polarisation and relativistic effects contributions to King plot non-linearity

Snowmass 2021: Quantum Sensors for HEP Science -- Interferometers, Mechanics, Traps, and Clocks

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