A synthetic biological quantum optical system

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LISHCHUK, Anna, KODALI, Goutham, MANCINI, Joshua A., BROADBENT, Matthew, DARROCH, Brice, MASS, Olga A., NABOK, Aleksey, DUTTON, P. Leslie, HUNTER, C. Neil, TÖRMÄ, Päivi and LEGGETT, Graham J. (2018). A synthetic biological quantum optical system. Nanoscale, 27, 13064-13073. [Article]

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21740:503762

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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.

More Information

Official URL:

http://pubs.rsc.org/en/Content/ArticleLanding/2018...

Additional Information:

** From Crossref via Jisc Publications Router. ** Licence for VoR version of this article starting on 29-06-2018: http://creativecommons.org/licenses/by/3.0/

Uncontrolled Keywords:

General Materials Science

Research Institute, Centre or Group - Does NOT include content added after October 2018:

Materials and Engineering Research Institute > Advanced Coatings and Composites Research Centre > Electronic Materials and Sensors Research Group

Page Range:

13064-13073

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