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- W2288928360 abstract "Photonic lattices provide an excellent platform for simulating conventional topological systems, and they can also be explored for the study of novel topological phases. However, a direct measurement of bulk topological invariants remains a great challenge. Here we study topological features of generalized commensurate Aubry-Andre-Harper (AAH) photonic lattices and construct a topological phase diagram by calculating all bulk Chern numbers, and then explore the bulk-edge correspondence by analyzing the topological edge states and their winding numbers. In contrast to incommensurate AAH models, we find that diagonal and off-diagonal commensurate AAH models are not topologically equivalent. In particular, nontrivial topological phases with large Chern numbers and topological phase transitions are possible. By implementing Thouless pumping of light in photonic lattices, we propose a simple scheme to measure the bulk Chern numbers." @default.
- W2288928360 created "2016-06-24" @default.
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- W2288928360 date "2016-03-03" @default.
- W2288928360 modified "2023-10-18" @default.
- W2288928360 title "Topological Phase Transitions and Thouless Pumping of Light in Photonic Lattices" @default.
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