Synthetic magnetism for photon fluids

Niclas Westerberg, Calum Maitland, Daniele Franco Angelo Faccio, Kali Wilson, Patrik Ohberg, Ewan M. Wright

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)
36 Downloads (Pure)


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.
Original languageEnglish
Article number023805
JournalPhysical Review A
Issue number2
Publication statusPublished - 1 Aug 2016


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