Coherently wired light-harvesting in photosynthetic marine algae at ambient temperature

Elisabetta Collini, Cathy Y. Wong, Krystyna E. Wilk, Paul M. G. Curmi, Paul Brumer and Gregory D. Scholes ()
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Elisabetta Collini: Institute for Optical Sciences and Centre for Quantum Information and Quantum Control, University of Toronto, 80 St George Street, Toronto, Ontario, M5S 3H6 Canada
Cathy Y. Wong: Institute for Optical Sciences and Centre for Quantum Information and Quantum Control, University of Toronto, 80 St George Street, Toronto, Ontario, M5S 3H6 Canada
Krystyna E. Wilk: School of Physics and Centre for Applied Medical Research, St Vincent’s Hospital, The University of New South Wales, Sydney, New South Wales 2052, Australia
Paul M. G. Curmi: School of Physics and Centre for Applied Medical Research, St Vincent’s Hospital, The University of New South Wales, Sydney, New South Wales 2052, Australia
Paul Brumer: Institute for Optical Sciences and Centre for Quantum Information and Quantum Control, University of Toronto, 80 St George Street, Toronto, Ontario, M5S 3H6 Canada
Gregory D. Scholes: Institute for Optical Sciences and Centre for Quantum Information and Quantum Control, University of Toronto, 80 St George Street, Toronto, Ontario, M5S 3H6 Canada

Nature, 2010, vol. 463, issue 7281, 644-647

Abstract: Wired for light One of the most intriguing and most studied features of photosynthesis is the exquisite efficiency with which energy can be transferred within photosynthetic complexes. A new spectroscopic study confirms earlier hints that quantum effects might be at play, by directly revealing quantum-coherent sharing of electronic excitation across 5-nm-wide photosynthetic proteins from Chroomonas CCMP270 marine algae at room temperature. The observation suggests that distant units within the proteins are 'wired' together by quantum-coherence to enhance light-harvesting efficiency.

Date: 2010
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DOI: 10.1038/nature08811

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