期刊
JOURNAL OF CHEMICAL PHYSICS
卷 134, 期 17, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3579455
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资金
- National Science Foundation [CHE-1058791]
- DARPA [BAA-10-40 QuBE]
- Chemical Sciences, Geosciences and Biosciences Division, Office of Basic Energy Sciences, Office of Science, U.S. Department of Energy
- Research Council of Lithuania [VP1-3.1-SMM-07-K-01-020]
We study the effects of correlated molecular transition energy fluctuations in molecular aggregates on the density matrix dynamics, and their signatures in the optical response. Correlated fluctuations do not affect single-exciton dynamics and can be described as a nonlocal contribution to the spectral broadening, which appears as a multiplicative factor in the time-domain response function. Intraband coherences are damped only by uncorrelated transition energy fluctuations. The signal can then be expressed as a spectral convolution of a local contribution of the uncorrelated fluctuations and the nonlocal contribution of the correlated fluctuations. (C) 2011 American Institute of Physics. [doi:10.1063/1.3579455]
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