10.17863/CAM.11049
Saba, Matthias
Hamm, Joachim M
Baumberg, Jeremy
0000-0002-9606-9488
Hess, Ortwin
0000-0002-6024-0677
Group Theoretical Route to Deterministic Weyl Points in Chiral Photonic Lattices.
Apollo - University of Cambridge Repository (staging)
2017
Apollo - University of Cambridge Repository (staging)
Apollo - University of Cambridge Repository (staging)
2018-05-23
2018-05-23
2017-12
Article
0031-9007
https://www.repository.cam.ac.uk/handle/1810/276110
1079-7114
Attribution 4.0 International
Topological phases derived from point degeneracies in photonic band structures show intriguing and unique behavior. Previously identified band degeneracies are based on accidental degeneracies and subject to engineering on a case-by-case basis. Here we show that deterministic pseudo Weyl points with nontrivial topology and hyperconic dispersion exist at the Brillouin zone center of chiral cubic symmetries. This conceivably allows realization of topologically protected frequency isolated surface bands in 3D and n=0 properties as demonstrated for a nanoplasmonic system and a photonic crystal.
European Research Council
320503
Engineering and Physical Sciences Research Council
EP/L027151/1