Enhanced quantum entanglement in the non-Markovian dynamics of biomolecular excitons

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 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.

• Fecha de publicación: 2009
• Institución: Ministerio de Ciencia, Tecnología e Innovación
• Repositorio: Repositorio Minciencias
• Idioma: eng
• OAI Identifier: oai:repositorio.minciencias.gov.co:20.500.14143/21662
• Acceso en línea: https://repositorio.minciencias.gov.co/handle/20.500.14143/21662
• Palabra clave: Fluorescencia; Composición de la materia -- Propiedades químicas; Estructura molecular; Números cuánticos; Teoría molecular; Bioquímica analítica
• License: http://purl.org/coar/access_right/c_f1cf