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LightNet - Tracking the Coherent Light Path in Photosynthetic Networks

Objective

ature has developed photosynthesis to power life. Networks of light harvesting antennas capture the sunlight to funnel the photonic energy towards reaction centres. Surprisingly, quantum coherences are observed in the energy transfer of photosynthetic complexes, even at room temperature.
Does nature exploit quantum concepts? Does the coherence help to find an optimal path for robust or efficient transfer? How are the coherences sustained? What is their spatial extent in a real light-harvesting network? So far only solutions of complexes were studied, far from the natural network operation, putting on hold conclusions as to a biological role of the coherences.
My group recently succeeded in the first detection of coherent oscillations of a single photo-synthetic complex at physiological conditions, and non-classical photon emission of individual complexes. These pioneering results, together with our expertise in nanophotonics, pave the way to address photosynthetic networks in real nano-space and on femtosecond timescale. Specific objectives are:

--Ultrafast single protein detection: tracing the fs coherent energy transfer path of an individual complex; addressing the very nature of the persistent coherences.
-Beyond fluorescence: light harvesting complex are designed for light transport, not emission. I will explore innovative alternatives: optical antennas to enhance quantum efficiency; detection of stimulated emission; and electrical read-out on graphene.
-Nanoscale light transport: using local excitation and detection by nanoholes, nanoslits and scanning antenna probes I will spatially map the extent of the inter-complex transfer.
-The network: combining both coherent fs excitation and localized nanoscale excitation/detection I will track the extent of coherences throughout the network.

The impact of this first exploration of light transport in a nanoscale bionetwork ranges to solar energy management, molecular biology, polymer chemistry and material science.

Fields of science (EuroSciVoc)

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Keywords

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Programme(s)

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Topic(s)

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Funding Scheme

Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.

ERC-ADG - Advanced Grant

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Call for proposal

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(opens in new window) ERC-2014-ADG

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Host institution

FUNDACIO INSTITUT DE CIENCIES FOTONIQUES
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 2 856 250,00
Address
AVINGUDA CARL FRIEDRICH GAUSS 3
08860 Castelldefels
Spain

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Region
Este Cataluña Barcelona
Activity type
Research Organisations
Links
Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 2 856 250,00

Beneficiaries (1)

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