  Entanglement is one of the most fundamental features of quantum systems. In
this work, we obtain the entanglement spectrum and entropy of Floquet
noninteracting fermionic lattice models and build their connections with
Floquet topological phases. Topological winding and Chern numbers are
introduced to characterize the entanglement spectrum and eigenmodes.
Correspondences between the spectrum and topology of entanglement Hamiltonians
under periodic boundary conditions and topological edge states under open
boundary conditions are further established. The theory is applied to Floquet
topological insulators in different symmetry classes and spatial dimensions.
Our work thus provides a useful framework for the study of rich entanglement
patterns in Floquet topological matter.

Quantum Physics;Mesoscale and Nanoscale Physics;Statistical Mechanics