Beyond Bose Fireworks: Stimulated Emission of Exotic Shaken Condensates

Periodic modulation of the two-body interaction in a Bose condensate has led to the interesting observation of “Bose fireworks” [Nature 551, 356–359 (2017)]; these were later shown to be well captured by our time-dependent Gross-Pitaevskii simulations [arXiv:1807.08781]. The promise of these experiments is that this stimulated emission may, through the process of parametric amplification, make it possible to unravel the structure (i.e., wavefunction amplitude and phase) of an unknown condensate. We seek to fulfill this promise by presenting numerical simulations of analogous fireworks patterns in more complex systems. We consider single and multiple imprinted vortices (giving rise to "chiral jets") as well as more exotic states. Using the far-field jets to reveal the character of the initial condensate is reminiscent of established procedures in particle physics and we address how this expertise can be exploited.