Synthetic magnetism for photon fluids

Westerberg, N. and Maitland, C. and Faccio, D. and Wilson, K. and Öhberg, P. and Wright, E. M. (2016) Synthetic magnetism for photon fluids. Physical Review A, 94 (2). 023805. ISSN 2469-9926 (

[thumbnail of Westerberg-etal-PRA-2016-Synthetic-magnetism-for-photon-fluids]
Text. Filename: Westerberg_etal_PRA_2016_Synthetic_magnetism_for_photon_fluids.pdf
Final Published Version
License: Strathprints license 1.0

Download (505kB)| Preview


We develop a theory of artificial gauge fields in photon fluids for the cases of both second-order and third-order optical nonlinearities. This applies to weak excitations in the presence of pump fields carrying orbital angular momentum and is thus a type of Bogoliubov theory. The resulting artificial gauge fields experienced by the weak excitations are an interesting generalization of previous cases and reflect the PT-symmetry properties of the underlying non-Hermitian Hamiltonian. We illustrate the observable consequences of the resulting synthetic magnetic fields for examples involving both second-order and third-order nonlinearities.