Scattering lengths in isotopologues of the RbYb system

Borkowski, Mateusz; Żuchowski, Piotr S.; Ciuryło, R.; Julienne, Paul S.; Kędziera, Dariusz; Mentel, Ł. M.; Tecmer, Paweł; Münchow, Frank; Bruni, Christian; Görlitz, Axel

doi:10.1103/physreva.88.052708

Cited by 58 publications

(73 citation statements)

References 70 publications

(121 reference statements)

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“…A small number of groups, including ourselves, have constructed experiments with such studies in mind. [29][30][31][32] Owing to the novelty and exacting nature of such experiments, combined with the di culty of calculating ab initio the molecular properties, it is not yet clear which specific molecules will be most conducive to the above stated goals. However, the variety of diatomic molecules that are potentially realisable using laser-cooling methods will each o↵er unique properties for experimental study.…”

Section: Introductionmentioning

confidence: 99%

A versatile dual-species Zeeman slower for caesium and ytterbium

Hopkins

Butler

Guttridge

et al. 2016

Review of Scientific Instruments

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We describe the design, construction and operation of a versatile dual-species Zeeman slower for both Cs and Yb, which is easily adaptable for use with other alkali metals and alkaline earths. With the aid of analytic models and numerical simulation of decelerator action, we highlight several real-world problems affecting the performance of a slower and discuss effective solutions. To capture Yb into a magneto-optical trap (MOT), we use the broad $^1S_0$ to $^1P_1$ transition at 399 nm for the slower and the narrow $^1S_0$ to $^3P_1$ intercombination line at 556 nm for the MOT. The Cs MOT and slower both use the D2 line ($6^2S_{1/2}$ to $6^2P_{3/2}$) at 852 nm. We demonstrate that within a few seconds the Zeeman slower loads more than $10^9$ Yb atoms and $10^8$ Cs atoms into their respective MOTs. These are ideal starting numbers for further experiments on ultracold mixtures and molecules.Comment: 15 pages, 15 figures, 4 tables, revtex4-

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Section: Introductionmentioning

confidence: 99%

A versatile dual-species Zeeman slower for caesium and ytterbium

Hopkins

Butler

Guttridge

et al. 2016

Review of Scientific Instruments

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“…That might allow the experimentalist to modify the scattering length in the ultracold mixture of Rb and Sr and control the behaviour of quantum gas of such atoms. It is worth mentioning that several other similar species are subject to intense ongoing research, like YbLi [30][31][32][33][34] and YbRb [35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Ground- and excited-state properties of the polar and paramagnetic RbSr molecule: A comparative study

2014

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This paper deals with the electronic structure of RbSr, a molecule possessing both a permanent magnetic and electric dipole moment in its own frame allowing its manipulation with external fields. Two complementary ab-initio approaches are used for the ground and lowest excited states: first, an approach relying on optimized effective core potentials with core polarization potentials based on a full configuration interaction involving three valence electrons, and second, an approach using a small-size effective core potential with 19 correlated electrons in the framework of coupled-cluster theory. We have found excellent agreement between these two approaches for the ground state properties including the permanent dipole moment. We have focused on studies of excited states correlated to the two lowest asymptotes Rb(5p 2 P )+Sr(5s 2 1 S) and Rb(5s 2 S)+Sr(5s5p 3 P ) relevant for ongoing experiments on quantum degenerate gases. We present also the Hund c) case potential curves obtained using atomic spin-orbit constants. These potential curves are an excellent starting point for experimental studies of molecular structure of RbSr using high-resolution spectroscopy.

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“…[45]). With interspecies scattering lengths between 87 Rb and 172 Yb of a a↑ = a a↓ ≈ −160.7 a Bohr [67] and ω/(2π) ≈ 5.3 kHz, one obtains decay rates γ R /(2π) ∼ 100 Hz, with asymmetries 10 Fig. 2(a)].…”

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confidence: 99%

Quantum Spin Dimers from Chiral Dissipation in Cold-Atom Chains

et al. 2014

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We consider the nonequilibrium dynamics of a driven dissipative spin chain with chiral coupling to a one-dimensional (1D) bosonic bath, and its atomic implementation with a two-species mixture of cold quantum gases. The reservoir is represented by a spin-orbit coupled 1D quasicondensate of atoms in a magnetized phase, while the spins are identified with motional states of a separate species of atoms in an optical lattice. The chirality of reservoir excitations allows the spins to couple differently to left-and right-moving modes, which in our atomic setup can be tuned from bidirectional to purely unidirectional. Remarkably, this leads to a pure steady state in which pairs of neighboring spins form dimers that decouple from the remainder of the chain. Our results also apply to current experiments with two-level emitters coupled to photonic waveguides.PACS numbers: 03.65. Yz, 67.85.Jk, 42.50.Dv, 03.67.Bg In an open quantum many-body system, the competition of particle interactions, external driving and the dissipative coupling to a quantum reservoir can result in novel scenarios for the formation of strongly correlated quantum states [1]. This is not only of interest as a nonequilibrium condensed matter problem per se [2-9], but dissipatively prepared entangled states also provide a potential resource for quantum information tasks [10][11][12][13][14][15]. Quantum optical systems of cold atoms or solid-state impurities provide a natural setting for such open manybody quantum systems. The paradigmatic example is given by an ensemble of two-level atoms driven by laser light, and coupled to a photonic reservoir [16][17][18][19], e.g., as one-dimensional (1D) engineered photonic band gap materials [20]. These model systems can be described as a collection of spin-1/2 systems, which via the photonic modes interact with long-range dipole-dipole interactions, and exhibit collective and enhanced decay into radiation modes of photonic structures. The realization of such Dicke-type models [21, 22] coupled to low-dimensional quantum reservoirs, and the observation of the associated dynamical quantum phases and phase transitions are, at present, an outstanding challenge in quantum optics [23][24][25][26].In the present work, we introduce a realization of dissipative quantum magnetism based on cold atoms in optical lattices [27,28], where the quantum reservoir is represented by phononic degrees of freedom of a 1D spin-orbit coupled Bose-Einstein quasicondensate (quasi-BEC) [29][30][31][32][33][34][35]. This model system provides a faithful and experimentally realistic representation of a chain of driven spin-1/2 particles coupled to a 1D bosonic bath. Crucially, spin-orbit coupling (SOC) makes the reservoir chiral, with the spins coupling differently to the left and right propagating modes, γ L = γ R [cf. Fig. 1(a)]. This asymmetry is, moreover, tunable via the atomic parameters, making it possible to engineer the spin-bath coupling from purely unidirectional to fully bidirectional.To describe the dynamics of our 1D spin c...

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Scattering lengths in isotopologues of the RbYb system

Cited by 58 publications

References 70 publications

A versatile dual-species Zeeman slower for caesium and ytterbium

A versatile dual-species Zeeman slower for caesium and ytterbium

Ground- and excited-state properties of the polar and paramagnetic RbSr molecule: A comparative study

Quantum Spin Dimers from Chiral Dissipation in Cold-Atom Chains

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