scholarly journals Noise-Assisted Discord-Like Correlations in Light-Harvesting Photosynthetic Complexes

2021 ◽  
Vol 3 (2) ◽  
pp. 262-271
Author(s):  
Pablo Reséndiz-Vázquez ◽  
Ricardo Román-Ancheyta ◽  
Roberto León-Montiel
Keyword(s):  
Potential Role ◽  
Energy Transport ◽  
Light Harvesting ◽  
Quantum Correlations ◽  
Transport Processes ◽  
Quantum Evolution ◽  
Light Harvesting Complexes ◽  
Transport Efficiency ◽  
Photovoltaic Materials ◽  
Photosynthetic Complexes

Transport phenomena in photosynthetic systems have attracted a great deal of attention due to their potential role in devising novel photovoltaic materials. In particular, energy transport in light-harvesting complexes is considered quite efficient due to the balance between coherent quantum evolution and decoherence, a phenomenon coined Environment-Assisted Quantum Transport (ENAQT). Although this effect has been extensively studied, its behavior is typically described in terms of the decoherence’s strength, namely weak, moderate or strong. Here, we study the ENAQT in terms of quantum correlations that go beyond entanglement. Using a subsystem of the Fenna–Matthews–Olson complex, we find that discord-like correlations maximize when the subsystem’s transport efficiency increases, while the entanglement between sites vanishes. Our results suggest that quantum discord is a manifestation of the ENAQT and highlight the importance of beyond-entanglement correlations in photosynthetic energy transport processes.

scholarly journals Local quantum uncertainty as a robust metric to characterize discord-like quantum correlations in subsets of the chromophores in photosynthetic light-harvesting complexes

2020 ◽  
Vol 66 (4 Jul-Aug) ◽  
pp. 525
Author(s):  
M. Chávez-Huerta ◽  
F. Rojas
Keyword(s):  
Quantum Coherence ◽  
Light Harvesting ◽  
Green Sulfur Bacteria ◽  
Quantum Correlations ◽  
Light Harvesting Complexes ◽  
Thermal Equilibrium State ◽  
Light Harvesting Complex ◽  
Quantum Uncertainty ◽  
Local Quantum Uncertainty ◽  
Local Quantum

Green sulfur bacteria is a photosynthetic organism whose light-harvesting complex accommodates a pigment-protein complex called Fenna-Matthews-Olson (FMO). The FMO complex sustains quantum coherence and quantum correlations between the electronic states of spatially separated pigment molecules as energy moves with nearly a 100% quantum efficiency to the reaction center. We present a method based on the quantum uncertainty associated to local measurements to quantify discord-like quantum correlations between two subsystems where one is a qubit and the other is a qudit. We implement the method by calculating local quantum uncertainty (LQU), concurrence, and coherence between subsystems of pure and mixed states represented by the eigenstates and by the thermal equilibrium state determined by the FMO Hamiltonian. Three partitions of the seven chromophores network define the subsystems: one chromophore with six chromophores, pairs of chromophores, and one chromophore with two chromophores. Implementation of the LQU approach allows us to characterize quantum correlations that had not been studied before, identify the most quantum correlated subsets of chromophores, and determine that, in the strongest associations of chromophores, the LQU is a monotonically increasing function of the coherence.

scholarly journals Dimerization-assisted energy transport in light-harvesting complexes

2010 ◽  
Vol 132 (23) ◽  
pp. 234501 ◽  
Author(s):  
S. Yang ◽  
D. Z. Xu ◽  
Z. Song ◽  
C. P. Sun
Keyword(s):  
Energy Transport ◽  
Light Harvesting ◽  
Light Harvesting Complexes

scholarly journals Identifying the quantum correlations in light-harvesting complexes

2010 ◽  
Vol 82 (6) ◽  
Author(s):  
Kamil Brádler ◽  
Mark M. Wilde ◽  
Sai Vinjanampathy ◽  
Dmitry B. Uskov
Keyword(s):  
Light Harvesting ◽  
Quantum Correlations ◽  
Light Harvesting Complexes

Research on Entanglement and Coherence in Light Harvesting Complex during Photosynthesis

2013 ◽  
Vol 641-642 ◽  
pp. 927-930
Author(s):  
Xing Yu Guan ◽  
J. Chee
Keyword(s):  
Energy Transport ◽  
Light Harvesting ◽  
Protein Complexes ◽  
Green Plant ◽  
Light Harvesting Complex ◽  
Transport Efficiency ◽  
The Past ◽  
Pigment Protein Complexes

Photosynthesis is a wonderful phenomenon which is present in green plant. In recent years, it has been discovered that there is entanglement in the biological pigment protein complexes, and that may be the reason of high transport efficiency. And coherence also plays an important role during the process of this efficiency energy transport. However, some scientists consider that it is not at all clear entanglement exists in the FMO complex, or unlike coherence, its role for the transport efficiency seems to be irrelevant. This paper mainly introduces what progress have scientists made during the past few years.

scholarly journals Interplay between structural hierarchy and exciton diffusion in artificial light harvesting

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Björn Kriete ◽  
Julian Lüttig ◽  
Tenzin Kunsel ◽  
Pavel Malý ◽  
Thomas L. C. Jansen ◽  
...  
Keyword(s):  
Energy Transport ◽  
Light Harvesting ◽  
Artificial Light ◽  
Light Harvesting Complex ◽  
Structural Hierarchy ◽  
Exciton Diffusion ◽  
Exciton Transfer ◽  
Exciton Transport ◽  
Photosynthetic Complexes ◽  
Shed Light

Abstract Unraveling the nature of energy transport in multi-chromophoric photosynthetic complexes is essential to extract valuable design blueprints for light-harvesting applications. Long-range exciton transport in such systems is facilitated by a combination of delocalized excitation wavefunctions (excitons) and exciton diffusion. The unambiguous identification of the exciton transport is intrinsically challenging due to the system’s sheer complexity. Here we address this challenge by employing a spectroscopic lab-on-a-chip approach: ultrafast coherent two-dimensional spectroscopy and microfluidics working in tandem with theoretical modeling. We show that at low excitation fluences, the outer layer acts as an exciton antenna supplying excitons to the inner tube, while under high excitation fluences the former converts its functionality into an exciton annihilator which depletes the exciton population prior to any exciton transfer. Our findings shed light on the excitonic trajectories across different sub-units of a multi-layered artificial light-harvesting complex and underpin their great potential for directional excitation energy transport.

Variety, the spice of life and essential for robustness in excitation energy transfer in light-harvesting complexes

2020 ◽  
Vol 221 ◽  
pp. 59-76 ◽  
Author(s):  
Sue Ann Oh ◽  
David F. Coker ◽  
David A. W. Hutchinson
Keyword(s):  
Energy Transfer ◽  
Excitation Energy ◽  
Recent Work ◽  
Energy Transport ◽  
Light Harvesting ◽  
Excitation Energy Transfer ◽  
Light Harvesting Complexes ◽  
Protein Scaffold ◽  
Site Variation

We review our recent work showing how important the site-to-site variation in coupling between chloroplasts in FMO and their protein scaffold environment is for energy transport in FMO and investigate the role of vibronic modes in this transport.

scholarly journals Silver Island Film for Enhancing Light Harvesting in Natural Photosynthetic Proteins

2020 ◽  
Vol 21 (7) ◽  
pp. 2451 ◽  
Author(s):  
Dorota Kowalska ◽  
Marcin Szalkowski ◽  
Karolina Sulowska ◽  
Dorota Buczynska ◽  
Joanna Niedziolka-Jonsson ◽  
...  
Keyword(s):  
Light Harvesting ◽  
Protein Complexes ◽  
Photosynthetic Pigment ◽  
Functional Materials ◽  
Photosynthetic Reaction Centers ◽  
Light Harvesting Complexes ◽  
Pigment Protein Complexes ◽  
Chlorophyll Protein ◽  
Silver Island ◽  
Photosynthetic Complexes

The effects of combining naturally evolved photosynthetic pigment–protein complexes with inorganic functional materials, especially plasmonically active metallic nanostructures, have been a widely studied topic in the last few decades. Besides other applications, it seems to be reasonable using such hybrid systems for designing future biomimetic solar cells. In this paper, we describe selected results that point out to various aspects of the interactions between photosynthetic complexes and plasmonic excitations in Silver Island Films (SIFs). In addition to simple light-harvesting complexes, like peridinin-chlorophyll-protein (PCP) or the Fenna–Matthews–Olson (FMO) complex, we also discuss the properties of large, photosynthetic reaction centers (RCs) and Photosystem I (PSI)—both prokaryotic PSI core complexes and eukaryotic PSI supercomplexes with attached antenna clusters (PSI-LHCI)—deposited on SIF substrates.

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