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    Engineering Excited-State Interactions at Ultracold Temperatures

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    1901.02557v1.pdf
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    Genre
    Pre-print
    Date
    2019-06-14
    Author
    Mills, M
    Puri, P
    Li, M
    Schowalter, SJ
    Dunning, A
    Schneider, C
    Kotochigova, S
    Hudson, ER
    Subject
    physics.atom-ph
    physics.atom-ph
    Permanent link to this record
    http://hdl.handle.net/20.500.12613/4547
    
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    DOI
    10.1103/PhysRevLett.122.233401
    Abstract
    © 2019 American Physical Society. Using a recently developed method for precisely controlling collision energy, we observe a dramatic suppression of inelastic collisions between an atom and ion (Ca+Yb+) at low collision energy. This suppression, which is expected to be a universal phenomenon, arises when the spontaneous emission lifetime of the excited state is comparable to or shorter than the collision complex lifetime. We develop a technique to remove this suppression and engineer excited-state interactions. By dressing the system with a strong catalyst laser, a significant fraction of the collision complexes can be excited at a specified atom-ion separation. This technique allows excited-state collisions to be studied, even at ultracold temperature, and provides a general method for engineering ultracold excited-state interactions.
    Citation to related work
    American Physical Society (APS)
    Has part
    Physical Review Letters
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    ae974a485f413a2113503eed53cd6c53
    http://dx.doi.org/10.34944/dspace/4529
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