Three-dimensional two-band Floquet topological insulator with <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>Z</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math> index

We present a class of three-dimensional (3D) two-band Floquet topological insulators constructed from two-dimensional Floquet topological insulators with a Ztopological index. It is shown that the 3D two-band Floquet topological insulator has a {Z}_{2}topological index, whose value can be obtained by numerical calculations or by using a relation to the winding number. The classification of the 3D {Z}_{2}Floquet topological insulator,...