Strong coupling between chlorosomes of photosynthetic bacteria and a confined optical cavity mode

被引：106

作者：

Coles, David M. ^{[1
]}

Yang, Yanshen ^{[2
]}

Wang, Yaya ^{[2
]}

Grant, Richard T. ^{[3
]}

Taylor, Robert A. ^{[4
]}

Saikin, Semion K. ^{[5
,6
]}

Aspuru-Guzik, Alan ^{[5
]}

Lidzey, David G. ^{[3
]}

Tang, Joseph Kuo-Hsiang ^{[2
]}

Smith, Jason M. ^{[1
]}

机构：

[1] Univ Oxford, Dept Mat, Oxford OX1 3PH, England

[2] Clark Univ, Dept Chem & Biochem, Worcester, MA 01610 USA

[3] Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire, England

[4] Univ Oxford, Dept Phys, Oxford OX1 3PU, England

[5] Harvard Univ, Dept Chem & Chem Biol, Cambridge, MA 02138 USA

[6] Kazan Fed Univ, Inst Phys, Kazan 420008, Russia

来源：

NATURE COMMUNICATIONS | 2014年 / 5卷

基金：

英国工程与自然科学研究理事会;

关键词：

ORGANIC-SEMICONDUCTOR MICROCAVITIES; EXCITATION-ENERGY TRANSFER; GREEN SULFUR BACTERIA; CHLOROBIUM-TEPIDUM; CHLOROBACULUM-TEPIDUM; CHLOROFLEXUS-AURANTIACUS; BACTERIOCHLOROPHYLL-C; QUANTUM MICROCAVITY; CIRCULAR-DICHROISM; POLARITON EMISSION;

D O I：

10.1038/ncomms6561

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Strong exciton-photon coupling is the result of a reversible exchange of energy between an excited state and a confined optical field. This results in the formation of polariton states that have energies different from the exciton and photon. We demonstrate strong exciton-photon coupling between light-harvesting complexes and a confined optical mode within a metallic optical microcavity. The energetic anti-crossing between the exciton and photon dispersions characteristic of strong coupling is observed in reflectivity and transmission with a Rabi splitting energy on the order of 150 meV, which corresponds to about 1,000 chlorosomes coherently coupled to the cavity mode. We believe that the strong coupling regime presents an opportunity to modify the energy transfer pathways within photosynthetic organisms without modification of the molecular structure.

引用

页数：8

共 69 条

[1] Modelling of asymmetric excitons in organic microcavities [J].