Floquet eigenspectra of a nonlinear two-mode system under periodic driving: The emergence of ring structures
Floquet eigenspectra of a nonlinear two-mode system under periodic driving: The emergence of ring structures
We study Floquet eigenspectra of a nonlinear two-mode system under a periodic driving of the off-diagonal coupling. By solving the Gross-Pitaevskii equation numerically, we obtain triangular and loop structures near the crossings of different Floquet branches. At lower driving frequencies, we find "ring" and "double-ring" structures which are distinct from …