The MagLab is funded by the National Science Foundation and the State of Florida.
The MagLab is funded by the National Science Foundation and the State of Florida.
Title: Topological Physics in Cavity QED
Series: Quantum Seminar
Host: Irinel Chiorescu
Abstract: "In this talk, I discuss two recent projects where we have studied the role of topology in cavity QED. In the first project, I introduce a topological phase known as the anomalous Floquet photon pump (AFPP) whose natural topological response involves quantized conversion of photons from one frequency to another. I discuss its connection to a more famous topological phase – the anomalous Floquet insulator – and introduce a very simple model for realizing the AFPP using a time-dependent Jaynes-Cummings Hamiltonian. In the second project, I consider the prospect of using topological edge modes in photonic cavity arrays to mediate long-range coupling between qubits. I show that an infinite-range RKKY-type interaction is mediated by topological edge modes in a photon Chern insulator and with magnitude that is unaffected by the distance between qubits."