3 years ago

Theory of excitation of Rydberg polarons in an atomic quantum gas.

S. Yoshida, G. Woehl Jr., T. C. Killian, J. Burgdorfer, H. R. Sadeghepour, R. Ding, F. Camargo, R. Schmidt, F. B. Dunning, J. D. Whalen, E. Demler

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 functional determinant theory, and we extend this technique to describe Rydberg polarons of finite mass. Mean-field and classical descriptions of the spectrum are derived as approximations of the many-body theory. The various approaches are applied to experimental observations of polarons created by excitation of Rydberg atoms in a strontium Bose-Einstein condensate.

Publisher URL: http://arxiv.org/abs/1709.01838

DOI: arXiv:1709.01838v3

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