Supplemental Material: “Polaron-to-polaron transitions in the radio-frequency spectrum of a quasi-two-dimensional Fermi gas”

In this supplemental material, we discuss the calculation of the radio-frequency spectra arising from confinement-induced dimers and polarons in a quasi-two-dimensional Fermi gas. We determine the dimer binding energies, including both the tight axial confinement and the nonzero transverse confinement. We provide the probabilities for dimer-to-dimer transitions and the shape of the dimerto-scattering state spectrum. We also find the energy and quasi-particle weights for polarons in the two-dimensional gas and the corresponding resonance frequencies for polaron-to-polaron transitions.