Branching fractions for 
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 decays in 
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Zhang, Zhiqiang; Arnold, K. J.; Chanu, Sapam Ranjita; Kaewuam, R.; Safronova, M. S.; Barrett, M. D.

doi:10.1103/physreva.101.062515

Cited by 12 publications

(15 citation statements)

References 32 publications

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“…Transition dipole matrix elements * s.l.cornish@durham.ac.uk are fundamental properties of atoms as well as being crucial parameters for determining, for example, the blackbody radiation shift of atoms which is often a limiting systematic uncertainty in atomic clocks [27]. A number of discrepancies between experimental results and between theory and experiment have been pointed out in the literature [28][29][30][31] recently, giving particular importance to further benchmark tests.…”

Section: Introductionmentioning

confidence: 99%

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Measurement of the tune-out wavelength for Cs133 at 880 nm

et al. 2021

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We perform a measurement of the tune-out wavelength, λ 0 , between the D 1 , 6 2 S 1/2 → 6 2 P 1/2 , and D 2 , 6 2 S 1/2 → 6 2 P 3/2 , transitions for 133 Cs in the ground hyperfine state (F = 3, m F = +3). At λ 0 , the frequencydependent scalar polarizability is zero leading to a zero scalar ac Stark shift. We measure the polarizability as a function of wavelength using Kapitza-Dirac scattering of a 133 Cs Bose-Einstein condensate in a one-dimensional optical lattice, and determine the tune-out wavelength to be λ 0 = 880.21790( 40) stat (8) sys nm. From this measurement we determine the ratio of reduced matrix elements to be 1.9808(2). This represents an improvement of a factor of 10 over previous results derived from excited-state lifetime measurements. We use the present measurement as a benchmark test of high-precision theory.

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Section: Introductionmentioning

confidence: 99%

“…Experimental determination of this ratio is also of particular interest due to discrepancy between theoretical and experimental values in Ba + discussed in Refs. [29,30]. We carry out a benchmark comparison with theoretical calculations of the Cs ratio, testing the methodology for determining theory uncertainties.…”

Section: Introductionmentioning

confidence: 99%

Measurement of the tune-out wavelength for Cs133 at 880 nm

et al. 2021

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show abstract

“…* s.l.cornish@durham.ac.uk Transition dipole matrix elements are fundamental properties of atoms as well as being crucial parameters for determining, for example, the blackbody radiation shift of atoms which is often a limiting systematic uncertainty in atomic clocks [27]. A number of discrepancies between experimental results and between theory and experiment have been pointed out in the literature [28][29][30][31] recently, giving particular importance to further benchmark tests.…”

Section: Introductionmentioning

confidence: 99%

“…This ratio is in agreement with previous results from lifetime measurements [50], but with an error bar reduced by more than a factor of 10. Experimental determination of this ratio is also of particular interest due to discrepancy between theoretical and experimental values in Ba + discussed in [29,30]. We carry out a benchmark comparison with theoretical calculations of the Cs ratio, testing the methodology for determining theory uncertainties.…”

Section: Introductionmentioning

confidence: 99%

Measurement of the tune-out wavelength for $^{133}$Cs at $880$ nm

Ratkata,

Gregory,

Innes

et al. 2021

Preprint

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We perform a measurement of the tune-out wavelength, λ0, between the D1, 6 2 S 1/2 → 6 2 P 1/2 , and D2, 6 2 S 1/2 → 6 2 P 3/2 , transitions for 133 Cs in the ground hyperfine state (F = 3, mF = +3). At λ0, the frequency-dependent scalar polarizability is zero leading to a zero scalar ac Stark shift. We measure the polarizability as a function of wavelength using Kapitza-Dirac scattering of a 133 Cs Bose-Einstein condensate in a one-dimensional optical lattice, and determine the tuneout wavelength to be λ0 = 880.21790( 40)stat( 8)sys nm. From this measurement we determine the ratio of reduced matrix elements to be 9808(2). This represents an improvement of a factor of 10 over previous results derived from excited-state lifetime measurements. We use the present measurement as a benchmark test of high-precision theory.

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“…The ion has been drawing the attention of theorists and experimentalists over the last two decades or so. The recent theoretical and experimental ventures [1,2,9] prove its extant significance and challenges in advancing science and technologies. The laser used to control the ion for experimental purposes shifts (Stark shift) energy levels of the ions.…”

Section: Introductionmentioning

confidence: 99%

Two-photon polarizability of Ba$^+$ ion: Control of spin-mixing process in an ultracold $^{137}$Ba$^+$--$^{87}$Rb mixture

Das¹,

Bhowmik²,

Dutta³

et al. 2021

Preprint

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Ionic clocks exhibit one of the most promising candidates for the frequency standards. Recent investigations show the profound advantages of interrogating two laser lights with different frequencies in developing the frequency standards. Here, we present a scheme of a two-photon excitation process to calculate the dynamic polarizabilities of a few low-lying states of 137 Ba + by employing highly correlated relativistic many-body theory. We demonstrate the Stark shift cancellation for the clock states of 137 Ba + at the two-photon magic wavelengths, which would be an essential input to achieve better accuracy for the ionic clock experiments. We also calculate the magic wavelengths under the single-photon process to serve as the reference and for a comparative study. The calculated single-and two-photon magic wavelengths lie in the optical regime and are thus significant for future state-of-the-art experiments. Further, as an application, we investigate the impact of the two-photon polarizability on the spin-mixing process of an ultra-cold spin-1 mixture 137 Ba + − 87 Rb.We demonstrate the flexibility of the spin-exchange mechanism in the mixture in the presence of a tunable magnetic field and highlight the two-photon process-specific spin-oscillation protocol.

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Branching fractions for P3/2 decays in Ba+

Cited by 12 publications

References 32 publications

Measurement of the tune-out wavelength for Cs133 at 880 nm

Measurement of the tune-out wavelength for Cs133 at 880 nm

Measurement of the tune-out wavelength for $^{133}$Cs at $880$ nm

Two-photon polarizability of Ba$^+$ ion: Control of spin-mixing process in an ultracold $^{137}$Ba$^+$--$^{87}$Rb mixture

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