  Floquet exceptional points correspond to the coalescence of two (or more)
quasi-energies and corresponding Floquet eigenstates of a time-periodic
non-Hermitian Hamiltonian. They generally arise when the oscillation frequency
satisfies a multiphoton resonance condition. Here we discuss the interplay
between Floquet exceptional points and the chiral dynamics observed, over
several oscillation cycles, in a wide class of non-Hermitian systems when they
are slowly cycled in opposite directions of parameter space.
