Line shapes of optical Feshbach resonances near the intercombination transition of bosonic ytterbium

Borkowski, Mateusz; Ciuryło, R.; Julienne, Paul S.; Tojo, Satoshi; Enomoto, Kazuki; Takahashi, Yoshiro

doi:10.1103/physreva.80.012715

Cited by 39 publications

(69 citation statements)

References 65 publications

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“…If A and B are spherically symmetric atomic states and there are no downward transitions from either of them, we can apply the Casimir-Polder identity, (13) to simplify the general expressions. For the (A+B) dimer, we obtain the well known C 6 and C 8 coefficient formulas (see, e.g., [36])…”

Section: General Formalismmentioning

confidence: 99%

“…The subject of long-range interactions of Yb atoms and Yb-alkali atoms has recently became of much interest owing to study of quantum gas mixtures [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19], development of optical lattice clocks [20,21], study of fundamental symmetries [22], quantum computing [23] and practical realization of quantum simulation proposals [24][25][26]. Yb is a particularly suitable candidate for all of these applications owing to its five bosonic and two fermionic stable isotopes in natural abundance, the 1 S 0 ground state, the long-lived metastable 6s6p Presently, there is much interest in forming cold molecules with both electric and magnetic dipole moments because of the greater possibilities for trapping and manipulation [2,6,17,18,27].…”

Section: Introductionmentioning

confidence: 99%

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Relativistic many-body calculations of van der Waals coefficients for Yb-Li and Yb-Rb dimers

et al. 2014

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We derive the relativistic formulas for the van der Waals coefficients of Yb-alkali dimers that correlate to ground and excited separated-atom limits. We calculate C6 and C8 coefficients of particular experimental interest. We also derive a semi-empirical formula that expresses the C8 coefficient of heteronuclear A + B dimers in terms of the C6 and C8 coefficients of homonuclear dimers and the static dipole and quadrupole polarizabilities of the atomic states A and B. We report results of calculation of the C6 coefficients for the Yb-Rb

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Section: General Formalismmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Relativistic many-body calculations of van der Waals coefficients for Yb-Li and Yb-Rb dimers

et al. 2014

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“…Through a calculation similar to that of Ref. [72] one can show that near the dissociation limit two sets of Hund's case (c) bound states can be found. For interaction energies much larger than the rotational energy, these can be described as single channels with effective V int + V rot given by…”

Section: Fig 3 (Color Online) A) Relevant Spin-orbit Matrix Elementmentioning

confidence: 99%

“…III for details. The polarization-independent f rot factors are valid when no external fields fix the atomic z axis and low light intensities are used [72]. If, however, such fields are present, the projection M of the total angular momentum on the z axis also has to be considered.…”

Section: Optical Feshbach Resonancesmentioning

confidence: 99%

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Optical Feshbach resonances and ground-state-molecule production in the RbHg system

et al. 2017

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We present the prospects for photoassociation, optical control of interspecies scattering lengths and finally, the production of ultracold absolute ground state molecules in the Rb+Hg system. We use the "gold standard" ab initio methods for the calculations of ground (CCSD(T)) and excited state (EOM-CCSD) potential curves. The RbHg system, thanks to the wide range of stable Hg bosonic isotopes, offers possibilities for mass-tuning of ground state interactions. The optical lengths describing the strengths of optical Feshbach resonances near the Rb transitions are favorable even at large laser detunings. Ground state RbHg molecules can be produced with efficiencies ranging from about 20% for deeply bound to at least 50% for weakly bound states close to the dissociation limit. Finally, electronic transitions with favorable Franck-Condon factors can be found for the purposes of a STIRAP transfer of the weakly bound RbHg molecules to the absolute ground state using commercially available lasers.

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Modeling the electronic structures of the ground and excited states of the ytterbium atom and the ytterbium dimer: A modern quantum chemistry perspective

Tecmer

Boguslawski

Borkowski

et al. 2019

Int J of Quantum Chemistry

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We present a comprehensive theoretical study of the electronic structures of the Yb atom and the Yb 2 molecule, respectively, focusing on their ground and lowest-lying electronically excited states. Our study includes various state-of-the-art quantum chemistry methods such as CCSD, CCSD(T), CASPT2 (including spin-orbit coupling), and EOM-CCSD as well as some recently developed pCCD-based approaches and their extensions to target excited states. Specifically, we scan the lowest-lying potential energy surfaces of the Yb 2 dimer and provide a reliable benchmark set of spectroscopic parameters including optimal bond lengths, vibrational frequencies, potential energy depths, and adiabatic excitation energies. Our in-depth analysis unravels the complex nature of the electronic spectrum of Yb 2 , which is difficult to model accurately by any conventional quantum chemistry method. Finally, we scrutinize the biexcited character of the first 1 Σ + g excited state and its evolution along the potential energy surface. K E Y W O R D S relativistic effects, electron corellation effects, spin-orbit coupling, equation of motion coupled cluster, CASPT2 | INTRODUCTIONThe divalent ytterbium atom has in recent years garnered significant attention thanks to its many uses in cold atom physics. It has a nonmagnetic 1 S 0 ground state and several useful optical transitions: the strong 1 S 0 $ 1 P 1 line can be used for Zeeman slowing, whereas the narrow (181 kHz) intercombination 1 S 0 $ 3 P 1 line can be used to directly laser cool Yb atoms to microkelvin temperatures. [1] Yb has seven stable isotopes: two fermions (171 and 173 with nuclear spins of 1/2 and 5/2, respectively) and five bosons (168, 170, 172, 174, and 176) that lack nuclear spin. The rich isotope structure makes it possible to mass-tune the atomic interactions [2] and facilitates a wide array of possible quantum-degenerate gases. [3][4][5][6] The doubly forbidden 1 S 0 $ 3 P 0 transition lies at the heart of optical atomic clocks [7] that are among the most precise physical instruments known to mankind. For example, an ytterbium clock has recently been demonstrated to enable geopotential measurements with an accuracy below a centimeter. [8] The long-lived 3 P 0 clock states also find use in quantum simulations using Yb atoms. [9] The long-range interactions in the Yb dimer have been probed extensively by high-resolution photoassociation spectroscopy (PAS) [10] near the narrow 1 S 0 $ 3 P 1 intercombination line. The excited 1 S 0 + 3 P 1 (0 + u ) [11,12] state has been probed by single color PAS and provided the van der Waals C 6 coefficient and an improved value of the atomic 3 P 1 lifetime. Two-color PAS of ground state 0 + g vibrational levels [2,13] delivered accurate

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Line shapes of optical Feshbach resonances near the intercombination transition of bosonic ytterbium

Cited by 39 publications

References 65 publications

Relativistic many-body calculations of van der Waals coefficients for Yb-Li and Yb-Rb dimers

Relativistic many-body calculations of van der Waals coefficients for Yb-Li and Yb-Rb dimers

Optical Feshbach resonances and ground-state-molecule production in the RbHg system

Modeling the electronic structures of the ground and excited states of the ytterbium atom and the ytterbium dimer: A modern quantum chemistry perspective

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