  We introduce the concept of multichannel Floquet Perfect Absorbers (FPAs)
which are periodically modulated lossy interferometric traps that completely
absorb incident monochromatic waves. The proposed FPA protocols utilize a
Floquet engineering approach which inflicts a variety of emerging phenomena and
features: reconfigurability of perfect absorption (PA) for a broad range of
frequencies of the incident wave; PA for infinitesimal local losses, and PA via
critical coupling with high-Q modes by inducing back-reflection dynamical
mirrors.
