Formation of Cold<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>Cs</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>Molecules through Photoassociation

Fioretti, A.; Comparat, D.; Crubellier, A.; Dulieu, Olivier; Masnou-Seeuws, F.; Pillet, P.

doi:10.1103/physrevlett.80.4402

Cited by 521 publications

(379 citation statements)

References 17 publications

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“…5 corresponds to a rate of 3 × 10 −11 cm 3 /s, comparable to the photoassociation rates of Cs 2 molecules in weakly bound levels of the 0 − g (P 3/2 ) excited state [30]. The important difference to Cs 2 is due to the predominantly 1/R 6 longrange behavior of the electronically excited state.…”

Section: Results: Photoassociation Of Sr2mentioning

confidence: 99%

Enhancing photoassociation rates by nonresonant-light control of shape resonances

González‐Férez

Koch

2012

Phys. Rev. A

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Photoassociation, assembling molecules from atoms using laser light, is limited by the low density of atom pairs at sufficiently short interatomic separations. Here, we show that non-resonant light with intensities of the order of 10 10 W/cm 2 modifies the thermal cloud of atoms, enhancing the Boltzmann weight of shape resonances and pushing scattering states below the dissociation limit. This leads to an enhancement of photoassociation rates by several orders of magnitude and opens the way to significantly larger numbers of ground state molecules in a thermal ensemble than achieved so far.

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Section: Results: Photoassociation Of Sr2mentioning

confidence: 99%

Enhancing photoassociation rates by nonresonant-light control of shape resonances

González‐Férez

Koch

2012

Phys. Rev. A

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“…In order to obtain estimates for the scattering length, we performed numerical integration of the radial Schrödinger equation (3) to determine the phase shift using the Runge-Kutta method along with a numerical quadrature (Simpson's rule) for the semiclassical approximation. The numerical integration was initiated just to the left of the classical turning point and integrated outwards to fit to the form (4).…”

Section: A Ground Statementioning

confidence: 99%

“…This is critical in terms of the ultracold regime as to whether cooling, trapping, and degeneracy can occur. It is extremely important in view of potential applications in exploring the fundamental process of ultracold charge transfer [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

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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“…The interest to study interactions in ultracold molecular gases [1] is propelling various research programs to produce and trap dense ultracold molecular ensembles [2,3,4,5,6,7]. The goals and perspectives in this field range from quantum computation [8] and quantum scattering [9] to ultrahigh precision spectroscopy [10] and coherent ultracold chemistry [11].…”

Section: Introductionmentioning

confidence: 99%

Coherent control with shaped femtosecond laser pulses applied to ultracold molecules

et al. 2006

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We report on coherent control of excitation processes of translationally ultracold rubidium dimers in a magneto-optical trap by using shaped femtosecond laser pulses. Evolution strategies are applied in a feedback loop in order to optimize the photoexcitation of the Rb2 molecules, which subsequently undergo ionization or fragmentation. A superior performance of the resulting pulses compared to unshaped pulses of the same pulse energy is obtained by distributing the energy among specific spectral components. The demonstration of coherent control to ultracold ensembles opens a path to actively influence fundamental photo-induced processes in molecular quantum gases.

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Formation of ColdCs2Molecules through Photoassociation

Cited by 521 publications

References 17 publications

Enhancing photoassociation rates by nonresonant-light control of shape resonances

Enhancing photoassociation rates by nonresonant-light control of shape resonances

Structure and interactions of ultracold Yb ions and Rb atoms

Coherent control with shaped femtosecond laser pulses applied to ultracold molecules

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