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A synthetic biological quantum optical system
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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10
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Nanoscale, Volume 10, issue 27, pp. 13064-13073
Abstract
In strong plasmon-exciton coupling, a surface plasmon mode is coupled to an array of localized emitters to yield new hybrid light-matter states (plexcitons), whose properties may in principle be controlled via modification of the arrangement of emitters. We show that plasmon modes are strongly coupled to synthetic light-harvesting maquette proteins, and that the coupling can be controlled via alteration of the protein structure. For maquettes with a single chlorin binding site, the exciton energy (2.06 ± 0.07 eV) is close to the expected energy of the Qy transition. However, for maquettes containing two chlorin binding sites that are collinear in the field direction, an exciton energy of 2.20 ± 0.01 eV is obtained, intermediate between the energies of the Qx and Qy transitions of the chlorin. This observation is attributed to strong coupling of the LSPR to an H-dimer state not observed under weak coupling.
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Lishchuk, A, Kodali, G, Mancini, J A, Broadbent, M, Darroch, B, Mass, O A, Nabok, A, Dutton, P L, Hunter, C N, Törmä, P & Leggett, G J 2018, 'A synthetic biological quantum optical system', Nanoscale, vol. 10, no. 27, pp. 13064-13073. https://doi.org/10.1039/c8nr02144a