Entanglement and entangling power of the dynamics in light-harvesting complexes

F. Caruso, A.W. Chin, A. Datta, S.F. Huelga, M.B. Plenio

    Research output: Contribution to journalArticlepeer-review

    163 Citations (Scopus)


    We study the evolution of quantum entanglement during exciton energy transfer (EET) in a network model of the Fenna-Matthews-Olson (FMO) complex, a biological pigment-protein complex involved in the early steps of photosynthesis in sulfur bacteria. The influence of Markovian as well as spatially and temporally correlated (non-Markovian) noise on the generation of entanglement across distinct chromophores (site entanglement) and different excitonic eigenstates (mode entanglement) is studied for different injection mechanisms, including thermal and coherent laser excitation. Additionally, we study the entangling power of the FMO complex under natural operating conditions. While quantum information processing tends to favor maximal entanglement, near unit EET is achieved as the result of an intricate interplay between coherent and noisy processes where the initial part of the evolution displays intermediate values of both forms of entanglement.
    Original languageEnglish
    Article number062346
    Number of pages8
    JournalPhysical Review A
    Issue number6
    Publication statusPublished - 2010


    Dive into the research topics of 'Entanglement and entangling power of the dynamics in light-harvesting complexes'. Together they form a unique fingerprint.

    Cite this