Bose-Einstein Condensation of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi>Sr</mml:mi><mml:mprescripts /><mml:none /><mml:mn>84</mml:mn></mml:mmultiscripts></mml:math>

Escobar, Y. N. Martinez de; Mickelson, P. G.; Yan, Mi; DeSalvo, B. J.; Nagel, Sarah; Killian, T. C.

doi:10.1103/physrevlett.103.200402

Cited by 139 publications

(67 citation statements)

References 44 publications

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“…The breakthrough for reaching quantum degeneracy came from the development of an efficient loading scheme which allowed to overcome the low natural abundance of 84 Sr (only ≈ 0.56%) and to take advantage of its favorable scattering length, a s ≈ 6.5 nm. A BEC of 84 Sr was almost simultaneously reported by two groups, Schreck's group (Insbruck) [72] and Killian's group (Rice University at Texas) [73].…”

Section: Strontiummentioning

confidence: 87%

Ultracold Fermi gases with emergent SU(N) symmetry

2014

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We review recent experimental and theoretical progress on ultracold alkaline-earth Fermi gases with emergent SU(N ) symmetry. Emphasis is placed on describing the ground-breaking experimental achievements of recent years. The latter include the cooling to below quantum degeneracy of various isotopes of ytterbium and strontium, the demonstration of optical Feshbach resonances and the optical Stern-Gerlach effect, the realization of a Mott insulator of 173 Yb atoms, the creation of various kinds of Fermi-Bose mixtures and the observation of many-body physics in optical lattice clocks. On the theory side, we survey the zoo of phases that have been predicted for both gases in a trap and loaded into an optical lattice, focusing on two and three-dimensional systems. We also discuss some of the challenges that lie ahead for the realization of such phases, such as reaching the temperature scale required to observe magnetic and more exotic quantum orders, and dealing with collisional relaxation of excited electronic levels.

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Section: Strontiummentioning

confidence: 87%

Ultracold Fermi gases with emergent SU(N) symmetry

2014

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“…Attractive interactions between non-degenerate Rydberg states are also appealing fin the context of recently proposed techniques for engineering effective ground state atom interactions by off-resonant Rydberg dressing of Bose-Einstein condenstates [51,52,53]. Quantum degeneracy was recently achieved for strontium atoms [54,55,56]. In contrast to alkali condensates, here Rydberg dressing using the Sr(5sns) states could be used to realize attractive effective ground state atom interactions, which, for example, may permit the creation of three-dimensional bright solitons [57].…”

Section: Discussionmentioning

confidence: 99%

Many-body physics with alkaline-earth Rydberg lattices

Mukherjee

Millen

Nath

et al. 2011

J. Phys. B: At. Mol. Opt. Phys.

110

121

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Abstract. We explore the prospects for confining alkaline-earth Rydberg atoms in an optical lattice via optical dressing of the secondary core valence electron. Focussing on the particular case of strontium, we identify experimentally accessible magic wavelengths for simultaneous trapping of ground and Rydberg states. A detailed analysis of relevant loss mechanisms shows that the overall lifetime of such a system is limited only by the spontaneous decay of the Rydberg state, and is not significantly affected by photoionization or autoionization. The van der Waals C 6 coefficients for the Sr(5sns 1 S 0 ) Rydberg series are calculated, and we find that the interactions are attractive. Finally we show that the combination of magic-wavelength lattices and attractive interactions could be exploited to generate many-body Greenberger-HorneZeilinger (GHZ) states.

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“…They are being used in frequency metrology [2][3][4] and are proposed for quantum information processing [5]. Recently, BEC has been achieved in 40 Ca [6], 84 Sr [7,8], 86 Sr [9], and 88 Sr [10]. Also, BEC of different Yb isotopes has been reported: 174 Yb [11], 170 Yb [12], 176 Yb [13], and 168 Yb [14], of which the last one has an abundance of only 0.13%, highlighting the possibility of using rare isotopes to achieve BEC.…”

Section: Introductionmentioning

confidence: 99%

Scattering lengths of calcium and barium isotopes

2011

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We have calculated the s-wave scattering length of all the even isotopes of calcium (Ca) and barium (Ba) in order to investigate the prospect of Bose-Einstein condensation (BEC). For Ca we have used an accurate molecular potential based on detailed spectroscopic data. Our calculations show that Ca does not provide other isotopes alternative to the recently Bose condensed 40 Ca that suffers strong losses because of a very large scattering length. For Ba we show by using a model potential that the even isotopes cover a broad range of scattering lengths, opening the possibility of BEC for at least one of the isotopes.

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Bose-Einstein Condensation ofSr84

Cited by 139 publications

References 44 publications

Ultracold Fermi gases with emergent SU(N) symmetry

Ultracold Fermi gases with emergent SU(N) symmetry

Many-body physics with alkaline-earth Rydberg lattices

Scattering lengths of calcium and barium isotopes

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