Measures and implications of electronic coherence in photosynthetic light-harvesting

Cathal Smyth; Francesca Fassioli; Gregory D. Scholes

doi:10.1098/rsta.2011.0420

Measures and implications of electronic coherence in photosynthetic light-harvesting

Cathal Smyth, Francesca Fassioli, Gregory D. Scholes

Research output: Contribution to journal › Article › peer-review

46 Scopus citations

Abstract

We review various methods for measuring delocalization in light-harvesting complexes. Direct relations between inverse participation ratios (IPRs) and entanglement measures are derived. The B850 ring from the LH2 complex in Rhodopseudomonas acidophila is studied. By analysing electronic energy transfer dynamics in the B850 ring using different metrics for quantifying excitonic delocalization, we conclude that measures of entanglement are far more robust (in terms of time scale, temperature and level of decoherence) than IPRs, and are therefore more appropriate for the purpose of studying the time evolution of coherence in a system.

Original language	English (US)
Pages (from-to)	3728-3749
Number of pages	22
Journal	Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
Volume	370
Issue number	1972
DOIs	https://doi.org/10.1098/rsta.2011.0420
State	Published - Aug 13 2012
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Engineering
General Physics and Astronomy
General Mathematics

Keywords

B850
Delocalization
Electronic coherence
Electronic energy transfer
Entanglement
Photosynthesis

Access to Document

10.1098/rsta.2011.0420

Cite this

@article{cb8bf3fe70fe41d4b3c6c200a610d98c,

title = "Measures and implications of electronic coherence in photosynthetic light-harvesting",

abstract = "We review various methods for measuring delocalization in light-harvesting complexes. Direct relations between inverse participation ratios (IPRs) and entanglement measures are derived. The B850 ring from the LH2 complex in Rhodopseudomonas acidophila is studied. By analysing electronic energy transfer dynamics in the B850 ring using different metrics for quantifying excitonic delocalization, we conclude that measures of entanglement are far more robust (in terms of time scale, temperature and level of decoherence) than IPRs, and are therefore more appropriate for the purpose of studying the time evolution of coherence in a system.",

keywords = "B850, Delocalization, Electronic coherence, Electronic energy transfer, Entanglement, Photosynthesis",

author = "Cathal Smyth and Francesca Fassioli and Scholes, {Gregory D.}",

year = "2012",

month = aug,

day = "13",

doi = "10.1098/rsta.2011.0420",

language = "English (US)",

volume = "370",

pages = "3728--3749",

journal = "Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences",

issn = "1364-503X",

publisher = "Royal Society of London",

number = "1972",

}

TY - JOUR

T1 - Measures and implications of electronic coherence in photosynthetic light-harvesting

AU - Smyth, Cathal

AU - Fassioli, Francesca

AU - Scholes, Gregory D.

PY - 2012/8/13

Y1 - 2012/8/13

N2 - We review various methods for measuring delocalization in light-harvesting complexes. Direct relations between inverse participation ratios (IPRs) and entanglement measures are derived. The B850 ring from the LH2 complex in Rhodopseudomonas acidophila is studied. By analysing electronic energy transfer dynamics in the B850 ring using different metrics for quantifying excitonic delocalization, we conclude that measures of entanglement are far more robust (in terms of time scale, temperature and level of decoherence) than IPRs, and are therefore more appropriate for the purpose of studying the time evolution of coherence in a system.

AB - We review various methods for measuring delocalization in light-harvesting complexes. Direct relations between inverse participation ratios (IPRs) and entanglement measures are derived. The B850 ring from the LH2 complex in Rhodopseudomonas acidophila is studied. By analysing electronic energy transfer dynamics in the B850 ring using different metrics for quantifying excitonic delocalization, we conclude that measures of entanglement are far more robust (in terms of time scale, temperature and level of decoherence) than IPRs, and are therefore more appropriate for the purpose of studying the time evolution of coherence in a system.

KW - B850

KW - Delocalization

KW - Electronic coherence

KW - Electronic energy transfer

KW - Entanglement

KW - Photosynthesis

UR - http://www.scopus.com/inward/record.url?scp=84863649804&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84863649804&partnerID=8YFLogxK

U2 - 10.1098/rsta.2011.0420

DO - 10.1098/rsta.2011.0420

M3 - Article

C2 - 22753823

AN - SCOPUS:84863649804

SN - 1364-503X

VL - 370

SP - 3728

EP - 3749

JO - Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences

JF - Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences

IS - 1972

ER -

Measures and implications of electronic coherence in photosynthetic light-harvesting

Abstract

All Science Journal Classification (ASJC) codes

Keywords

Access to Document

Other files and links

Fingerprint

Cite this