2018-08-062018-08-062009-08https://repositorio.minciencias.gov.co/handle/20.500.14143/21662We 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 crossover 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.pdf4 páginasenginfo:eu-repo/semantics/embargoedAccessArtículo científico10.1016/j.cplett.2009.07.053FluorescenciaComposición de la materia -- Propiedades químicasEstructura molecularNúmeros cuánticosTeoría molecularBioquímica analítica