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Browsing by Author "Burgdörfer, J."

Browsing by Author "Burgdörfer, J."

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  • Creation of Rydberg Polarons in a Bose Gas 
    Camargo, F.; Schmidt, R.; Whalen, J. D.; Ding, R.; Woehl, G.; Yoshida, S.; Burgdörfer, J.; Dunning, F. B.; Sadeghpour, H. R.; Demler, E.; Killian, T. C. (2018)
    We report spectroscopic observation of Rydberg polarons in an atomic Bose gas. Polarons are created by excitation of Rydberg atoms as impurities in a strontium Bose-Einstein condensate. They are distinguished from previously ...
  • Lifetimes of ultra-long-range strontium Rydberg molecules 
    Camargo, F.; Whalen, J. Â. D.; Ding, R.; Sadeghpour, H. R.; Yoshida, S.; Burgdörfer, J.; Dunning, F. B.; Killian, T. C. (2016)
    The lifetimes of the lower-lying vibrational states of ultra-long-range strontium Rydberg molecules comprising one ground-state 5 s<SUP>2</SUP> <SUP>1</SUP>S<SUB>0</SUB> atom and one Rydberg atom in the 5 s 38 s ...
  • Multielectron Transitions Induced by Neutron Impact on Helium 
    Liertzer, M.; Feist, J.; Nagele, S.; Burgdörfer, J. (2012)
    We explore excitation and ionization by neutron impact as a novel tool for the investigation of electron-electron correlations in helium. We present single- and double-ionization spectra calculated in accurate numerical ...
  • Probing nonlocal spatial correlations in quantum gases with ultra-long-range Rydberg molecules 
    Whalen, J. D.; Kanungo, S. K.; Ding, R.; Wagner, M.; Schmidt, R.; Sadeghpour, Hossein R.; Yoshida, S.; Burgdörfer, J.; Dunning, F. B.; Killian, T. Â. C. (2019)
    We present photoexcitation of ultra-long-range Rydberg molecules as a probe of spatial correlations in bosonic and fermionic quantum gases. Rydberg molecules can be created with well-defined internuclear spacing, set by ...
  • Production of ultra-long-range Rydberg molecules in a divalent atomic system 
    DeSalvo, B. J.; Aman, J.; Dunning, F. B.; Killian, T. C.; Sadeghpour, H. R.; Yoshida, S.; Burgdörfer, J. (2015)
    We report the creation of ultralong-range Sr$_2$ molecules comprising one ground-state $5s^2$ $^1S_0$ atom and one atom in a $5sns$ $^3S_1$ Rydberg state for $n$ ranging from 29 to 36. Molecules are created in a trapped ...
  • Theory of excitation of Rydberg polarons in an atomic quantum gas 
    Schmidt, R.; Whalen, J. D.; Ding, R.; Camargo, F.; Woehl, G.; Yoshida, S.; Burgdörfer, J.; Dunning, F. B.; Demler, E.; Sadeghpour, H. R.; Killian, T. C. (2018)
    We present a quantum many-body description of the excitation spectrum of Rydberg polarons in a Bose gas. The many-body Hamiltonian is solved with a functional determinant approach, and we extend this technique to describe ...
  • Time shifts in photoemission from a fully correlated two-electron model system 
    Nagele, S.; Pazourek, R.; Feist, J.; Burgdörfer, J. (2012)
    We theoretically investigate time-resolved photoemission originating from two different shells (1s and 2p) of a fully correlated atomic two-electron model system ionized by an extreme-ultraviolet attosecond light pulse. ...

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