TY - JOUR
T1 - Efficiency of energy transfer in a light-harvesting system under quantum coherence
AU - Olaya-Castro, Alexandra
AU - Lee, Chiu Fan
AU - Olsen, Francesca Fassioli
AU - Johnson, Neil F.
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2008/8/12
Y1 - 2008/8/12
N2 - We investigate the role of quantum coherence in the efficiency of excitation transfer in a ring-hub arrangement of interacting two-level systems, mimicking a light-harvesting antenna connected to a reaction center as it is found in natural photosynthetic systems. By using a quantum jump approach, we demonstrate that in the presence of quantum coherent energy transfer and energetic disorder, the efficiency of excitation transfer from the antenna to the reaction center depends intimately on the quantum superposition properties of the initial state. In particular, we find that efficiency is sensitive to symmetric and asymmetric superposition of states in the basis of localized excitations, indicating that initial-state properties can be used as an efficiency control parameter at low temperatures.
AB - We investigate the role of quantum coherence in the efficiency of excitation transfer in a ring-hub arrangement of interacting two-level systems, mimicking a light-harvesting antenna connected to a reaction center as it is found in natural photosynthetic systems. By using a quantum jump approach, we demonstrate that in the presence of quantum coherent energy transfer and energetic disorder, the efficiency of excitation transfer from the antenna to the reaction center depends intimately on the quantum superposition properties of the initial state. In particular, we find that efficiency is sensitive to symmetric and asymmetric superposition of states in the basis of localized excitations, indicating that initial-state properties can be used as an efficiency control parameter at low temperatures.
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U2 - 10.1103/PhysRevB.78.085115
DO - 10.1103/PhysRevB.78.085115
M3 - Article
AN - SCOPUS:49649090819
VL - 78
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 8
M1 - 085115
ER -