TY - JOUR T1 - Topologically nontrivial Floquet band structure in a system undergoing photonic transitions in the ultrastrong-coupling regime JF - Physical Review A Y1 - 2015 A1 - Yuan, Luqi A1 - Fan, Shanhui VL - 92 UR - http://link.aps.org/doi/10.1103/PhysRevA.92.053822http://link.aps.org/article/10.1103/PhysRevA.92.053822http://link.aps.org/accepted/10.1103/PhysRevA.92.053822 IS - 5 JO - Phys. Rev. A ER -