Data from: Robust purcell effect of CsPbI3 quantum dots using nonlocal plasmonic metasurfaces

Optoelectronic metadevices control and enhance light-matter interactions
by modulating the local optical field that interacts with emitters.
However, the optical property of the highly localized mode in the
plasmonic metasurface is sensitive to local disorders arising from
experimental fluctuations. Recently, the nonlocal mode of metasurfaces has
been attracting growing interest because the coupling within the array of
plasmonics results in long-range ordering and collective resonances. Here
we demonstrate the topological edge states and the nonlocal modes of Au
bow ties in a photonic crystal (PHC) lattice. The strong coupling between
plasmonic modes and PHC bands opens the topological band gap at the edge
of the Brillouin zone and forms the nonlocal mode having a resonant energy
insensitive to fluctuations in Au length, resulting in a robust Purcell
effect for quantum dots (QDs) coupling with the nonlocal mode in
metadevices. The topological band gap and robust enhancement indicate
great potential for the nonlocal plasmonic metasurface in quantum photonic
devices with novel functionalities.