期刊
CHEMICAL PHYSICS LETTERS
卷 478, 期 4-6, 页码 234-237出版社
ELSEVIER
DOI: 10.1016/j.cplett.2009.07.053
关键词
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资金
- DFG [SPP 1243]
- COLCIENCIAS grs [1106-14-17903, 1106-452-21296]
- DAAD PROCOL
- Excellence Initiative of the German Federal and State Governments
We show that quantum coherence of biomolecular excitons is maintained over exceedingly long times due to the constructive role of their non-Markovian protein-solvent environment. Using a numerically exact approach, we demonstrate that a slow quantum bath helps to sustain quantum entanglement of two pairs of Forster coupled excitons, in contrast to a Markovian environment. We consider the cross-over from a fast to a slow bath and from weak to strong dissipation and show that a slow bath can generate robust entanglement. This persists to surprisingly high temperatures, even higher than the excitonic gap and is absent for a Markovian bath. (C) 2009 Elsevier B. V. All rights reserved.
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