期刊
JOURNAL OF CHEMICAL PHYSICS
卷 144, 期 2, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4939523
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资金
- National Natural Scientific Foundation of China [21373064]
- Construction Project for Guizhou Provincial Key Laboratories [Z[2013]4009]
- Program for Innovative Research Team of Guizhou Province [QKTD[2014]4021]
- Natural Scientific Foundation from Guizhou Provincial Department of Education [QJKY[2013]142, QJTD[2013]16, ZDXK[2014]18]
The quantum interference is an intrinsic phenomenon in quantum physics for photon and massive quantum particles. In principle, the quantum interference may also occur with quasi-particles, such as the exciton. In this study, we show how the exciton quantum interference can be significant in aggregates through theoretical simulations with hierarchical equations of motion. The systems under investigation are generalized donor-bridge-acceptor model aggregates with the donor consisting of six homogeneous sites assuming the nearest neighbor coupling. For the models with single-path bridge, the exciton transfer time only shows a weak excitation energy dependence. But models with double-path bridge have a new short transfer time scale and the excitation energy dependence of the exciton transfer time assumes clear peak structure which is detectable with today's nonlinear spectroscopy. This abnormality is attributed to the exciton quantum interference and the condition for a clear observation in experiment is also explored. (C) 2016 AIP Publishing LLC.
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