Theory of optical suppression of ultracold-collision rates by polarized light

Napolitano, Reginaldo de Jesus; Weiner, J.; Julienne, Paul S.

doi:10.1103/physreva.55.1191

Cited by 60 publications

(91 citation statements)

References 45 publications

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“…To do this it is necessary to properly represent the threedimensional (3D) nature of the collision and the role of atomic degeneracy. References [55,58] treat the exchange of multiple photons during a collision, by which one partial wave is coupled to higher partial waves through the intrinsically anisotropic nature of the interaction with light. Reference [58] adapts the CC dressed atom formalism to cold atom collisions in strong optical fields to explain the phenomena of optical shielding.…”

Section: Coupled Channels Formulation Of Optical Feshbach Resonancesmentioning

confidence: 99%

Optical Feshbach resonances: Field-dressed theory and comparison with experiments

et al. 2015

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Optical Feshbach resonances (OFRs) have generated significant experimental interest in recent years. These resonances are promising for many-body physics experiments, yet the practical application of OFRs has been limited. The theory of OFRs has been based on an approximate model that fails in important detuning regimes, and the incomplete theoretical understanding of this effect has hindered OFR experiments. We present the most complete theoretical treatment of OFRs to date, demonstrating important characteristics that must be considered in OFR experiments and comparing OFRs to the well-studied case of magnetic Feshbach resonances. We also present a comprehensive treatment of the approximate OFR model, including a study of the range of validity for this model. Finally, we derive experimentally useful expressions that can be applied to real experimental data to extract important information about the resonance structure of colliding atoms.

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Section: Coupled Channels Formulation Of Optical Feshbach Resonancesmentioning

confidence: 99%

Optical Feshbach resonances: Field-dressed theory and comparison with experiments

et al. 2015

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“…The full three-dimensional treatment of the collision of a 1 S atom coupled to a 1 P atom by a light field is worked out in Ref. [40]. We adapt this treatment to our simplified model with molecular Hund's case (a) transitions between two molecular states with the usual rotational branch structure.…”

Section: E Excited State Short-range Potentialsmentioning

confidence: 99%

Calculations of collisions between cold alkaline-earth-metal atoms in a weak laser field

2001

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We calculate the light-induced collisional loss of laser-cooled and trapped magnesium atoms for detunings up to 50 atomic linewidths to the red of the 1 S0-1 P1 cooling transition. We evaluate loss rate coefficients due to both radiative and nonradiative state-changing mechanisms for temperatures at and below the Doppler cooling temperature. We solve the Schrödinger equation with a complex potential to represent spontaneous decay, but also give analytic models for various limits. Vibrational structure due to molecular photoassociation is present in the trap loss spectrum. Relatively broad structure due to absorption to the Mg2 1 Σu state occurs for detunings larger than about 10 atomic linewidths. Much sharper structure, especially evident at low temperature, occurs even at smaller detunings due to of Mg2 1 Πg absorption, which is weakly allowed due to relativistic retardation corrections to the forbidden dipole transition strength. We also perform model studies for the other alkaline earth species Ca, Sr, and Ba and for Yb, and find similar qualitative behavior as for Mg.34.50. Rk, 34.10.+x, 32.80.Pj

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“…For the case investigated here more details about this operator can be found in Refs. [22,26]. This width also depends on the kinetic energy of the relative motion of the two colliding atoms ε r .…”

Section: Photoassociation Resonancementioning

confidence: 99%

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

Borkowski¹,

Ciuryło²,

Julienne

et al. 2009

Phys. Rev. A

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The properties of bosonic Ytterbium photoassociation spectra near the intercombination transition 1 S0-3 P1 are studied theoretically at ultra low temperatures. We demonstrate how the shapes and intensities of rotational components of optical Feshbach resonances are affected by mass tuning of the scattering properties of the two colliding ground state atoms. Particular attention is given to the relationship between the magnitude of the scattering length and the occurrence of shape resonances in higher partial waves of the van der Waals system. We develop a mass scaled model of the excited state potential that represents the experimental data for different isotopes. The shape of the rotational photoassociation spectrum for various bosonic Yb isotopes can be qualitatively different.

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Theory of optical suppression of ultracold-collision rates by polarized light

Cited by 60 publications

References 45 publications

Optical Feshbach resonances: Field-dressed theory and comparison with experiments

Optical Feshbach resonances: Field-dressed theory and comparison with experiments

Calculations of collisions between cold alkaline-earth-metal atoms in a weak laser field

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

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