---
res:
  bibo_abstract:
  - "Non-Abelian gauge fields provide a conceptual framework to describe particles\r\nhaving
    spins, underlying many phenomena in electrodynamics, condensed-matter\r\nphysics
    and particle physics. Lattice models of non-Abelian gauge fields allow us\r\nto
    understand their physical implications in extended systems. The theoretical\r\nimportance
    of non-Abelian lattice gauge fields motivates their experimental synthesis\r\nand
    explorations. Photons are fundamental particles for which artificial gauge fields\r\ncan
    be synthesized, yet the demonstration of non-Abelian lattice gauge fields for\r\nphotons
    has not been achieved. Here we demonstrate SU(2) lattice gauge fields for\r\nphotons
    in the synthetic frequency dimensions, a playground to study lattice\r\nphysics
    in a scalable and programmable way. In our lattice model, we theoretically\r\nobserve
    that homogeneous non-Abelian lattice gauge potentials induce Dirac cones\r\nat
    time-reversal-invariant momenta in the Brillouin zone. We experimentally confirm\r\nthe
    presence of non-Abelian lattice gauge fields by two signatures: linear band\r\ncrossings
    at the Dirac cones, and the associated direction reversal of eigenstate\r\ntrajectories.
    We further demonstrate a non-Abelian scalar lattice gauge potential that\r\nlifts
    the degeneracies of the Dirac cones. Our results highlight the implications of\r\nnon-Abelian
    lattice gauge fields in topological physics, and provide a starting point\r\nfor
    demonstrations of emerging non-Abelian physics in the photonic synthetic\r\ndimensions.
    Our results may also benefit photonic technologies by providing controls\r\nof
    photon spins and pseudo-spins in topologically non-trivial ways.@eng"
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Dali
      foaf_name: Cheng, Dali
      foaf_surname: Cheng
  - foaf_Person:
      foaf_givenName: Kai
      foaf_name: Wang, Kai
      foaf_surname: Wang
  - foaf_Person:
      foaf_givenName: Charles
      foaf_name: Roques-Carmes, Charles
      foaf_surname: Roques-Carmes
      foaf_workInfoHomepage: http://www.librecat.org/personId=e2e68fc9-6505-11ef-a541-eb4e72cc3e82
  - foaf_Person:
      foaf_givenName: Eran
      foaf_name: Lustig, Eran
      foaf_surname: Lustig
  - foaf_Person:
      foaf_givenName: Olivia Y.
      foaf_name: Long, Olivia Y.
      foaf_surname: Long
  - foaf_Person:
      foaf_givenName: Heming
      foaf_name: Wang, Heming
      foaf_surname: Wang
  - foaf_Person:
      foaf_givenName: Shanhui
      foaf_name: Fan, Shanhui
      foaf_surname: Fan
  bibo_doi: 10.1038/s41586-024-08259-2
  bibo_issue: '8044'
  bibo_volume: 637
  dct_date: 2025^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/0028-0836
  - http://id.crossref.org/issn/1476-4687
  dct_language: eng
  dct_publisher: Springer Nature@
  dct_title: Non-Abelian lattice gauge fields in photonic synthetic frequency dimensions@
  fabio_hasPubmedId: '39743600'
...