Proposal for a Laser Control of Vibrational Cooling in Na-2 Using Resonance Coalescence

    Authors

    O. Atabek; R. Lefebvre; M. Lepers; A. Jaouadi; O. Dulieu;V. Kokoouline

    Comments

    Authors: contact us about adding a copy of your work at [email protected]

    Abbreviated Journal Title

    Phys. Rev. Lett.

    Keywords

    GROUND-STATE MOLECULES; PULSES; IONS; GAS; Physics, Multidisciplinary

    Abstract

    With a specific choice of laser parameters resulting in a so-called exceptional point (EP) in the wavelength-intensity parameter plane, it is possible to produce the coalescence of two Floquet resonances describing the photodissociation of the Na-2 molecule, which is one of the candidates for the formation of samples of translationally cold molecules. By appropriately tuning laser parameters along a contour encircling the exceptional point, the resonances exchange their quantum nature. Thus a laser-controlled transfer of the probability density from one field-free vibrational level to another is achieved through adiabatic transport involving these resonances. We propose an efficient scenario for vibrational cooling of Na-2 referring to cascade transfers involving multiple EPs and predicted to be robust up to a 78% rate against laser-induced dissociation.

    Journal Title

    Physical Review Letters

    Volume

    106

    Issue/Number

    17

    Publication Date

    1-1-2011

    Document Type

    Article

    Language

    English

    First Page

    4

    WOS Identifier

    WOS:000290100300008

    ISSN

    0031-9007

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