Berry-like phases in structured atoms and molecules

Meyer, Edmund; Leanhardt, Aaron; Cornell, Eric A.; Bohn, John L.

doi:10.1103/physreva.80.062110

Cited by 47 publications

(60 citation statements)

References 39 publications

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“…As a test of the basis set employed, we conducted equivalent calculations on the neutral YbRb molecule, yielding values as expected, consistent with those of Meyer and Bohn [30].…”

Section: Electronic Structure Calculationmentioning

confidence: 76%

Structure and interactions of ultracold Yb ions and Rb atoms

et al. 2012

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In order to study ultracold charge-transfer processes in hybrid atom-ion traps, we have mapped out the potential-energy curves and molecular parameters for several low-lying states of the Rb, Yb+ system. We employ both a multireference configuration interaction and a full configuration interaction (FCI) approach. Turning points, crossing points, potential minima, and spectroscopic molecular constants are obtained for the lowest five molecular states. Long-range parameters, including the dispersion coefficients, are estimated from our ab initio data. The separated-atom ionization potentials and atomic polarizability of the ytterbium atom (alpha(d) = 128.4 atomic units) are in good agreement with experiment and previous calculations. We present some dynamical calculations for (adiabatic) scattering lengths for the two lowest (Yb, Rb+) channels that were carried out in our work. However, we find that the pseudopotential approximation is rather limited in validity and only applies to nK temperatures. The adiabatic scattering lengths for both the triplet and singlet channels indicate that both are large and negative in the FCI approximation

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“…As a test of the basis set employed, we conducted equivalent calculations on the neutral YbRb molecule, yielding values as expected, consistent with those of Meyer and Bohn [30].…”

Section: Electronic Structure Calculationmentioning

confidence: 76%

Structure and interactions of ultracold Yb ions and Rb atoms

et al. 2012

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“…The realization of mixtures of trapped ultracold atomic gases [1][2][3][4][5] has opened new paths towards the formation of ultracold diatomic molecules [6][7][8][9][10], quantumstate control of chemical reactions [11], prospects for quantum computing with polar molecules [12][13][14], tests of fundamental symmetries [15][16][17] and studies of fundamental aspects of correlated many-body systems [18], and dilute quantum degenerate systems [19][20][21][22][23]. Cotrapped diamagnetic-paramagnetic mixtures have also made possible experimental realization of interspecies Feshbach resonances [24][25][26], two-species Bose-Einstein condensates and mixed Bose-Fermi and Fermi-Fermi degenerate gases [18,[27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Tune-out wavelengths of alkali-metal atoms and their applications

2011

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Using first-principles calculations, we identify "magic-zero" optical wavelengths, λzero, for which the ground-state frequency-dependent polarizabilities of alkali-metal atoms vanish. Our approach uses high-precision, relativistic all-order methods in which all single, double, and partial triple excitations of the Dirac-Fock wave functions are included to all orders of perturbation theory. We discuss the use of magic-zero wavelengths for sympathetic cooling in two-species mixtures of alkalis with group-II and other elements of interest. Special cases in which these wavelengths coincide with strong resonance transitions in a target system are identified.

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“…for a 1.5 µm laser), but possible, given the Doppler limit for Hg intercombination line is low (31 µK). Long term goals include high precision spectroscopy and molecule formation for the purposes of the search for new physics [34].…”

Section: Discussionmentioning

confidence: 99%

“…The effort to simultaneously cool Rb and Hg atoms despite the experimental challenges -for example, the deep UV 254 nm wavelength used for Doppler cooling of Hg -is driven by the possibility of obtaining the grand prize of ultracold RbHg molecules. Dimers containing the Hg atom were proposed by Meyer and Bohn as appropriate candidates for the search for the electric dipole moment of the electron [34], which is due to the fact that Hg is among the heaviest atoms which can be laser cooled.…”

Section: Introductionmentioning

confidence: 99%

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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Berry-like phases in structured atoms and molecules

Cited by 47 publications

References 39 publications

Structure and interactions of ultracold Yb ions and Rb atoms

Structure and interactions of ultracold Yb ions and Rb atoms

Tune-out wavelengths of alkali-metal atoms and their applications

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

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