Coherent oscillations in small Fermi-polaron systems

Research output: Contribution to journalArticle


Research units

  • University of Trento
  • Polytechnic University of Catalonia
  • Ludwig Maximilian University of Munich


We study the ground state and excitations of a one-dimensional trapped polarized Fermi gas interacting with a single impurity. First, we study the tunneling dynamics of the impurity through a potential barrier, such as one effectively created by a double-well trap. To this end, we perform an exact diagonalization of the full few-body Hamiltonian and analyze the results in a local-density approximation. Off-diagonal and one-particle correlation matrices are studied and are shown to be useful for discerning between different symmetries of the states. Second, we consider a radio-frequency spectroscopy of our system and the resulting spectral function. These calculations can motivate future experiments, which can provide further insight into the physics of a Fermi polaron.


Original languageEnglish
Article number063603
Pages (from-to)1-9
JournalPhysical Review A
Issue number6
Publication statusPublished - 1 Dec 2017
MoE publication typeA1 Journal article-refereed

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