Prospects of forming high-spin polar molecules from ultracold atoms

Frye, Matthew D.; Cornish, Simon L.; Hutson, Jeremy M.

doi:10.48550/arxiv.1910.09641

Cited by 2 publications

(3 citation statements)

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“…Strangely, the loss feature is present at the same magnetic-field value for all three bosonic erbium isotopes studied. Such behavior is inconsistent with a typical interspecies Feshbach resonance, where the magnetic field at which the resonance occurs is strongly dependent on the reduced mass of the atoms involved [47]. The mechanism behind this unusual feature is as of yet unknown and calls for further experimental and theoretical investigations.…”

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confidence: 87%

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Feshbach Resonances in an Erbium-Dysprosium Dipolar Mixture

Durastante,

Politi,

Sohmen

et al. 2020

Preprint

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We report on the observation of heteronuclear magnetic Feshbach resonances in several isotope mixtures of the highly magnetic elements erbium and dysprosium. Among many narrow features, we identify two resonances with a width greater than one Gauss. We characterize one of these resonances, in a mixture of 168 Er and 164 Dy, in terms of loss rates and elastic cross section, and observe a temperature dependence of the on-resonance loss rate suggestive of a universal scaling associated with broad resonances. Our observations hold promise for the use of such a resonance for tuning the interspecies scattering properties in a dipolar mixture. We further compare the prevalence of narrow resonances in an 166 Er-164 Dy mixture to the single-species case, and observe an increased density of resonances in the mixture.

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confidence: 87%

“…Surprisingly, the loss feature is centered at the same magnetic field (to within our resolution of 0.1 G) for all bosonic isotopes of erbium. This is quite unexpected as the magnetic-field value of the resonance position is typically highly sensitive to the reduced mass of the atoms involved [47].…”

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confidence: 99%

Feshbach Resonances in an Erbium-Dysprosium Dipolar Mixture

Durastante,

Politi,

Sohmen

et al. 2020

Preprint

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“…Numerous bialkali molecules have been created in this way, including KRb [36], Cs 2 [37], Rb 2 [38], RbCs [39,40], NaK [41][42][43], NaRb [44] and NaLi [45]. Significant progress is also being made towards producing molecules from mixtures of open-shell and closedshell atoms [46][47][48][49][50][51]. The second method employs direct laser cooling of molecules.…”

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confidence: 99%

Controlling the ac Stark effect of RbCs with dc electric and magnetic fields

Blackmore,

Sawant,

Gregory

et al. 2020

Preprint

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We investigate the effects of static electric and magnetic fields on the differential ac Stark shifts for microwave transitions in ultracold bosonic 87 Rb 133 Cs molecules, for light of wavelength λ = 1064 nm. Near this wavelength we observe unexpected two-photon transitions that may cause trap loss. We measure the ac Stark effect in external magnetic and electric fields, using microwave spectroscopy of the first rotational transition. We quantify the isotropic and anisotropic parts of the molecular polarizability at this wavelength. We demonstrate that a modest electric field can decouple the nuclear spins from the rotational angular momentum, greatly simplifying the ac Stark effect. We use this simplification to control the ac Stark shift using the polarization angle of the trapping laser.

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Prospects of forming high-spin polar molecules from ultracold atoms

Cited by 2 publications

References 83 publications

Feshbach Resonances in an Erbium-Dysprosium Dipolar Mixture

Feshbach Resonances in an Erbium-Dysprosium Dipolar Mixture

Controlling the ac Stark effect of RbCs with dc electric and magnetic fields

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