Quantum scattering treatment on the time-domain diffraction of a matter-wave soliton

We study the dynamics of the matter-wave soliton interacting with a vibrating mirror created by an evanescent light and provide a quantum scattering picture for the time-domain diffraction of the matter-wave soliton. Under Kramers-Henneberger (KH) transformation, i.e., in a vibrating coordinate, the vibration of the mirror can be cast to an effective gauge field. We then can exploit the Dyson series and the quantum scattering theory to investigate the dynamics of the soliton that moves in the effective gauge field and is reflected by a static mirror. Our analytical theory can quantitatively deduce the locations and the relative weights of the scattered wave packets, which is consistent with our numerical simulations of directly solving a nonlinear Schrödinger equation. In particular, for a two-frequency vibrating case, our theory predicts some interesting multipeak sideband structures in the diffracted matter-wave distributions, which can be resorted to the resonance of two frequencies. Underlying mechanisms and possible applications are discussed.