Cooling and trapping of atomic strontium

Xu, Xiping; Loftus, T.; Hall, John L.; Gallagher, A. C.; Ye, Jun

doi:10.1364/josab.20.000968

Cited by 123 publications

(113 citation statements)

References 42 publications

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“…An interesting strategy to overcome this obstacle is to work with metastable alkaline-earth atoms in their lowest (nsnp) 3 P 2 state [18,19], which have radiative lifetimes of the order of ten minutes [20]. The experimental feasibility of magnetic trapping of metastable 88 Sr has already been demonstrated [21,22,23].…”

Section: Introductionmentioning

confidence: 99%

Tensorial analysis of the long-range interaction between metastable alkaline-earth-metal atoms

Santra

Greene

2003

Phys. Rev. A

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Alkaline-earth atoms in their lowest (nsnp) 3 P 2 state are exceptionally long-lived and can be trapped magnetically. The nonspherical atomic structure leads to anisotropic long-range interactions between two metastable alkaline-earth atoms. The anisotropy affects the rotational motion of the diatomic system and couples states of different rotational quantum numbers. This paper develops a tensorial decomposition of the most important long-range interaction operators, and a systematic inclusion of molecular rotations, in the presence of an external magnetic field. This analysis illuminates the nature of the coupling between the various degrees-of-freedom. The consequences are illustrated by application to a system of practical interest: metastable 88 Sr. Using atomic parameters determined in a nearly-ab initio calculation, we compute adiabatic potential energy curves. The anisotropic interatomic interaction, in combination with the applied magnetic field, is demonstrated to induce the formation of a long-range molecular potential well. This curve correlates to two fully polarized, low-field seeking atoms in a rotational s-wave state. The coupling among molecular rotational states controls the existence of the potential well, and its properties vary as a function of magnetic-field strength, thus allowing the scattering length in this state to be tuned. The scattering length of metastable 88 Sr displays a resonance at a field of 339 Gauss.

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Section: Introductionmentioning

confidence: 99%

Tensorial analysis of the long-range interaction between metastable alkaline-earth-metal atoms

Santra

Greene

2003

Phys. Rev. A

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“…As a specific example, we will consider the case of the fermionic isotope 87 Sr of strontium where the energy splitting between hyperfine components is comparable to the widths of the resonances themselves [31]. Fig.…”

Section: B Multiple Excited Statesmentioning

confidence: 99%

Multiple scattering of photons by atomic hyperfine multiplets

Müller

Miniatura²,

Wilkowski³

et al. 2005

Phys. Rev. A

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Mesoscopic interference effects in multiple scattering of photons depend crucially on the internal structure of the scatterers. In the present article, we develop the analytical theory of multiple photon scattering by cold atoms with arbitrary internal hyperfine multiplets. For a specific application, we calculate the enhancement factor of elastic coherent backscattering as a function of detuning from an entire hyperfine multiplet of neighboring resonances that cannot be considered isolated. Our theory permits to understand why atoms behave differently from classical Rayleigh point-dipole scatterers, and how the classical description is recovered for larger but still microscopic objects like molecules or clusters.

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“…53 Cr [9] with hyperfine spin 3/2; and 40 K [10], 173 Yb [11], 43 Ca [12], 87 Sr [13], 133 Cs [14,15] with more higher ones. Using the Feshbach resonance [16,17] and confinement induced resonance [18] technique, the interactions among the atoms can be manipulated.…”

Section: Introductionmentioning

confidence: 99%

HiddenSp(2s+ 1)- orSO(2s+ 1)-symmetry and new exactly solvable models in ultracold atomic systems

Jiang¹,

Cao²,

Wang³

2011

J. Phys. A: Math. Theor.

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The high spin ultracold atom models with a special form of contact interactions, i.e., the scattering lengthes in the total spin-2, 4 · · · channels are equal but may be different from that in the spin-0 channel, is studied. It is found that those models have either Sp(2s + 1)-symmetry for the fermions or SO(2s + 1)-symmetry for the bosons in the spin sector. Based on the symmetry analysis, a new class of exactly solvable models is proposed and solved via the Bethe ansatz. The ground states for repulsive fermions are also discussed.

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Cooling and trapping of atomic strontium

Cited by 123 publications

References 42 publications

Tensorial analysis of the long-range interaction between metastable alkaline-earth-metal atoms

Tensorial analysis of the long-range interaction between metastable alkaline-earth-metal atoms

Multiple scattering of photons by atomic hyperfine multiplets

HiddenSp(2s+ 1)- orSO(2s+ 1)-symmetry and new exactly solvable models in ultracold atomic systems

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