Speaker
Description
Nature relies on biological light-harvesting (LH) complexes to capture and transfer solar energy to the reaction center with supreme efficiency. These LH complexes can be modeled theoretically as subwavelength rings of optical dipoles [1-4] which partially explains their outstanding collective optical properties. Taking inspiration from the oligomeric geometry of biological LH2 complexes [5, 6], here theoretically we propose a nonameric stacked three-dimensional (3D) ring geometry formed of two-level atoms with a diameter of 400 nm [7]. This 3D ring structure enables efficient inter-ring excitation transfer, in particular from the sparse to dense ring layer, when operated at zero temperature [7]. Our findings will be useful for designing artificial nanophotonic geometries utilizing different platforms operating at cryogenic temperature, where the interacting dipole description is both valid and dominant, to facilitate efficient energy transfer.
[1] M. Moreno-Cardoner et al., Phys. Rev. A 100, 023806 (2019)
[2] J. A. Needham et al., New J. Phys. 21, 073061 (2019)
[3] V. Scheil et al., Nanomaterials 13, 851 (2023)
[4] R. Holzinger et al., Optica Quantum 2, 57 (2024)
[5] G. McDermott et al., Nature 374, 517 (1995)
[6] D. Montemayor et al., J. Phys. Chem. B 122, 3815 (2018)
[7] A. Pal et al., arXiv:2409.15288 (2024)
Grant acknowledgments:
This research was funded in whole or in part by the Austrian Science Fund (FWF) 10.55776/ESP682. We also acknowledge support from Forschungsgruppe FG 5 (FWF); 10.55776/W1259 (FWF) (R.H.); 10.55776/COE1 (quantA) (R.H.); Grant No. PID2020-114626GB-I00 from the MICIN/AEI/10.13039/501100011033 (Government of Spain) (M.M-C).