Highly efficient energy excitation transfer in light-harvesting complexes: The fundamental role of n

@inproceedings{Caruso2009HighlyEE,
  title={Highly efficient energy excitation transfer in light-harvesting complexes: The fundamental role of n},
  author={Filippo Caruso and Alex W. Chin and Animesh Datta and Susana F. Huelga and Martin Bodo Plenio},
  year={2009}
}
Excitation transfer through interacting systems plays an important role in many areas of physics, chemistry, and biology. The uncontrollable interaction of the transmission network with a noisy environment is usually assumed to deteriorate its transport capacity, especially so when the system is fundamentally quantum mechanical. Here we identify key mechanisms through which noise such as dephasing, perhaps counter intuitively, may actually aid transport through a dissipative network by opening… 

Figures from this paper

Noise-assisted energy transfer in quantum networks and light-harvesting complexes

We provide physically intuitive mechanisms for the effect of noise on excitation energy transfer (EET) in networks. Using these mechanisms of dephasing-assisted transport (DAT) in a hybrid basis of

Efficient estimation of energy transfer efficiency in light-harvesting complexes.

TLDR
The second order time-convolution (TC2) master equation is revisited and a derivation of TC2 without making the usual weak system-bath coupling assumption is presented, showing that energy transfer efficiency is optimal and robust for the FMO protein complex of green sulfur bacteria with respect to variations in reorganization energy and bath correlation time scales.

Importance of excitation and trapping conditions in photosynthetic environment-assisted energy transport.

TLDR
The results call into question the suggested role of ENAQT in the photosynthetic process of green sulfur bacteria and highlight the subtleties associated with drawing lessons for designing biomimetic light-harvesting complexes.

Quantum coherence spectroscopy reveals complex dynamics in bacterial light-harvesting complex 2 (LH2)

  • E. HarelG. Engel
  • Physics, Chemistry
    Proceedings of the National Academy of Sciences
  • 2012
TLDR
This work provides experimental evidence of long-lived quantum coherence between the spectrally separated B800 and B850 rings of the light-harvesting complex 2 (LH2) of purple bacteria and suggests that quantum mechanical interference between different energy transfer pathways may be important even at ambient temperature.

Interplay between excitation kinetics and reaction-center dynamics in purple bacteria

Photosynthesis is arguably the fundamental process of life, since it enables energy from the Sun to enter the food chain on the Earth. It is a remarkable non-equilibrium process in which photons are

Energy-scales convergence for optimal and robust quantum transport in photosynthetic complexes.

TLDR
It is observed that the dynamics of the Fenna-Matthews-Olson (FMO) complex leads to optimal and robust energy transport due to a convergence of energy scales among all important internal and external parameters.

Organization of the Bacterial Light-Harvesting Apparatus Rationalized by Exciton Transport Optimization

Photosynthesis, the process by which energy from sunlight drives cellular metabolism, relies on a unique organization of light-harvesting and reaction center complexes. Recently, the organization of

On Dephasing and Exciton Transfer in Light-Harvesting Complexes

Photosynthesis is the main energy source in plants, algae and different types of bacteria, such as purple and green sulphur bacteria. The primary step in photosynthesis is represented by the photo

Superradiance Transition in Photosynthetic Light-Harvesting Complexes

TLDR
It is demonstrated that the presence of the sink is the dominant effect in the energy transfer which takes place even in the absence of a thermal bath, and maximal efficiency in energy transport is achieved in the vicinity of the superradiance transition.

Natural light harvesting systems: unraveling the quantum puzzles

  • A. Thilagam
  • Physics
    Journal of Mathematical Chemistry
  • 2014
In natural light harvesting systems, the sequential quantum events of photon absorption by specialized biological antenna complexes, charge separation, exciton formation and energy transfer to
...

References

SHOWING 1-10 OF 93 REFERENCES

Evidence for wavelike energy transfer through quantum coherence in photosynthetic systems

TLDR
Previous two-dimensional electronic spectroscopy investigations of the FMO bacteriochlorophyll complex are extended, and direct evidence is obtained for remarkably long-lived electronic quantum coherence playing an important part in energy transfer processes within this system is obtained.

Environment-assisted quantum walks in photosynthetic energy transfer.

TLDR
A theoretical framework for studying the role of quantum interference effects in energy transfer dynamics of molecular arrays interacting with a thermal bath within the Lindblad formalism is developed and an effective interplay between the free Hamiltonian evolution and the thermal fluctuations in the environment is demonstrated.

Unravelling coherent dynamics and energy dissipation in photosynthetic complexes by 2D spectroscopy.

TLDR
The complex chirality and fundamental symmetries of multidimensional optical signals are used to design new sequences of ultrashort laser pulses that can distinguish between coherent quantum oscillations and incoherent energy dissipation during the exciton relaxation.

Dephasing-assisted transport: quantum networks and biomolecules

Transport phenomena are fundamental in physics. They allow for information and energy to be exchanged between individual constituents of communication systems, networks or even biological entities.

Efficiency of energy transfer in a light-harvesting system under quantum coherence

We investigate the role of quantum coherence in the efficiency of excitation transfer in a ring-hub arrangement of interacting two-level systems, mimicking a light-harvesting antenna connected to a

How proteins trigger excitation energy transfer in the FMO complex of green sulfur bacteria.

TLDR
A simple electrostatic method is presented and applied to the Fenna-Matthews-Olson (FMO) complex of Prosthecochloris aestuarii and Chlorobium tepidum, allowing for the first time to reach agreement between experimental optical spectra and calculations based on transition energies of pigments that are calculated in large part independently, rather than fitted to the spectra.

Spectral trends in the fluorescence of single bacterial light-harvesting complexes: experiments and modified redfield simulations.

In this work we present and discuss the single-molecule fluorescence spectra of a variety of species of light-harvesting complexes: LH2 of Rhodopseudomonas acidophila, Rhodobacter sphaeroides, and

Long-range resonance energy transfer in molecular systems.

  • G. Scholes
  • Chemistry, Physics
    Annual review of physical chemistry
  • 2003
TLDR
This review covers Förster theory for donor-acceptor pairs and electronic coupling for singlet-singlet, triplet-triplet, and superexchange-mediated energy transfer and includes the transition density picture of Coulombic coupling as well as electronic coupling between molecular aggregates (excitons).

Dynamics of light harvesting in photosynthesis.

TLDR
This review emphasizes recent experimental observations of long-lasting quantum coherence in photosynthetic systems and the implications of quantumCoherence in natural photosynthesis.

Lindblad equations for strongly coupled populations and coherences in photosynthetic complexes.

TLDR
Simulations for a model dimer reproduce all observed strong coupling effects of time-resolved multidimensional signals in the light-harvesting antennae Fenna-Mathews-Olson.
...