When a photon excites an electron within plant chromophores , the transport of energy (without transporting net electric charge) resembles an exciton  condensate.
- Big Think > “Plants perform quantum mechanics feats that scientists can only do at ultra-cold temperatures” by Elizabeth Fernandez (May 27, 2023) – The paths of excitons in plant chromophores resemble those seen within a Bose-Einstein condensate.
“Chromophores … can pass energy between them in the form of excitons to a reaction center where energy can be used, kind of like a group of people passing a ball to a goal,” Anna Schouten, the study’s lead author, explained to Big Think.
 Wiki > Chromophore
A chromophore is the part of a molecule responsible for its color. … The chromophore is a region in the molecule where the energy difference between two separate molecular orbitals falls within the range of the visible spectrum. Visible light that hits the chromophore can thus be absorbed by exciting an electron from its ground state into an excited state.
See also Wiki > Chlorophyll – Chlorophyll molecules are arranged in and around photosystems that are embedded in the thylakoid membranes of chloroplasts.
And Wiki > Resonance energy transfer – a mechanism describing energy transfer between two light-sensitive molecules (chromophores).
 Wiki > Exciton (electron-hole pairs as integer-spin particles)
When a molecule absorbs a quantum of energy that corresponds to a transition from one molecular orbital to another molecular orbital, the resulting electronic excited state is also properly described as an exciton. … Molecular excitons have several interesting properties, one of which is energy transfer … whereby if a molecular exciton has proper energetic matching to a second molecule’s spectral absorbance, then an exciton may transfer (hop) from one molecule to another.