aqora

Role of coherent effects in the excitation of high vibrational molecular levels

А. Н. Ораевский, A. A. Stepanov, Vladimir A. Shcheglov

Journal of Experimental and Theoretical PhysicsDec 1, 19751 citation

Stimulated Raman Molecule Production in Bose-Einstein Condensates

Paul S. Julienne, Keith R. Burnett, Y. B. Band +1 more

A Raman photoassociation process can be used to form translationally cold molecules from a Bose-Einstein condensate. Coupled-channels scattering calculations show that the rate coefficient for coherent production of molecules in specific target states, $g{10}^{\ensuremath{-}10} {\mathrm{cm}}^{3}/\mathrm{s},$ can greatly exceed the rate coefficient for heating and loss channels due to excited-state spontaneous decay. This implies the feasibility of rapid coherent conversion of atom pairs in a condensate to molecules on a time scale short compared to the trap oscillation time.A Raman photoassociation process can be used to form translationally cold molecules from a Bose-Einstein condensate. Coupled-channels scattering calculations show that the rate coefficient for coherent production of molecules in specific target states, $g{10}^{\ensuremath{-}10} {\mathrm{cm}}^{3}/\mathrm{s},$ can greatly exceed the rate coefficient for heating and loss channels due to excited-state spontaneous decay. This implies the feasibility of rapid coherent conversion of atom pairs in a condensate to molecules on a time scale short compared to the trap oscillation time.

APSMay 1, 19980 citations

Some features of coherent optical effects in large molecules

Joshua Jortner, Jan Kommandeur

Chemical PhysicsMar 1, 197826 citations

Stimulated Raman molecule production in Bose-Einstein condensates

Paul S. Julienne, Keith R. Burnett, Y. B. Band +1 more

A Raman photoassociation process can be used to form translationally cold molecules from a Bose-Einstein condensate. Coupled-channels scattering calculations show that the rate coefficient for coherent production of molecules in specific target states, $>{10}^{\ensuremath{-}10} {\mathrm{cm}}^{3}/\mathrm{s},$ can greatly exceed the rate coefficient for heating and loss channels due to excited-state spontaneous decay. This implies the feasibility of rapid coherent conversion of atom pairs in a condensate to molecules on a time scale short compared to the trap oscillation time.A Raman photoassociation process can be used to form translationally cold molecules from a Bose-Einstein condensate. Coupled-channels scattering calculations show that the rate coefficient for coherent production of molecules in specific target states, $>{10}^{\ensuremath{-}10} {\mathrm{cm}}^{3}/\mathrm{s},$ can greatly exceed the rate coefficient for heating and loss channels due to excited-state spontaneous decay. This implies the feasibility of rapid coherent conversion of atom pairs in a condensate to molecules on a time scale short compared to the trap oscillation time.

Physical Review AAug 1, 1998105 citations

Specific Quantum Effects in Atomic and Molecular Systems

Michail, Yurievich, Dolomatov +9 more

材料科学与工程：中英文A版Jan 1, 20131 citation

Rotational pendulum dynamics of a vortex molecule in a channel geometry

Sarthak Choudhury, Joachim Brand

A vortex molecule is a topological excitation in two coherently coupled superfluids consisting of a vortex in each superfluid connected by a domain wall of the relative phase, also known as a Josephson vortex. We investigate the dynamics of this excitation in a quasi-two-dimensional geometry with slab or channel boundary conditions using an extended point-vortex framework complemented by Gross-Pitaevskii simulations. Apart from translational motion along the channel, the vortex molecule is found to exhibit intriguing internal dynamics including rotation and rotational-pendulum-like dynamics. Trajectories leading to a boundary-induced breakup of the vortex molecule are also described qualitatively by the simplified model. We classify the stable and unstable fixed points as well as separatrices that characterize the vortex molecule dynamics.A vortex molecule is a topological excitation in two coherently coupled superfluids consisting of a vortex in each superfluid connected by a domain wall of the relative phase, also known as a Josephson vortex. We investigate the dynamics of this excitation in a quasi-two-dimensional geometry with slab or channel boundary conditions using an extended point-vortex framework complemented by Gross-Pitaevskii simulations. Apart from translational motion along the channel, the vortex molecule is found to exhibit intriguing internal dynamics including rotation and rotational-pendulum-like dynamics. Trajectories leading to a boundary-induced breakup of the vortex molecule are also described qualitatively by the simplified model. We classify the stable and unstable fixed points as well as separatrices that characterize the vortex molecule dynamics.

arXiv:2207.05893Physical Review AOct 21, 20229 citations

Coherent effects in molecules with alternative excitation channels

Related papers

Coherent effects in molecules with alternative excitation channels

Related papers