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@ARTICLE{Jha:604463,
author = {Jha, Ajay and Zhang, Pan-Pan and Tiwari, Vandana and Chen,
Lipeng and Thorwart, Michael Ralf and Miller, Dwayne and
Duan, Hong-Guang},
title = {{U}nraveling quantum coherences mediating primary charge
transfer processes in photosystem {II} reaction center},
journal = {Science advances},
volume = {10},
number = {10},
issn = {2375-2548},
address = {Washington, DC [u.a.]},
publisher = {Assoc.},
reportid = {PUBDB-2024-01105},
pages = {eadk1312},
year = {2024},
abstract = {Photosystem II (PSII) reaction center (RC) is a unique
complex that is capable of efficiently separating electronic
charges across the membrane. The primary energy- and
charge-transfer (CT) processes occur on comparable ultrafast
timescales, which makes it extremely challenging to
understand the fundamental mechanism responsible for the
near-unity quantum efficiency of the transfer. Here, we
elucidate the role of quantum coherences in the ultrafast
energy and CT in the PSII RC by performing two-dimensional
(2D) electronic spectroscopy at the cryogenic temperature of
20 kelvin, which captures the distinct underlying quantum
coherences. Specifically, we uncover the electronic and
vibrational coherences along with their lifetimes during the
primary ultrafast processes of energy and CT. We construct
an excitonic model that provides evidence for coherent
energy and CT at low temperature in the 2D electronic
spectra. The principles could provide valuable guidelines
for creating artificial photosystems with exploitation of
system-bath coupling and control of coherences to optimize
the photon conversion efficiency to specific functions.},
cin = {MPSD / CFEL-ARD},
ddc = {500},
cid = {I:(DE-H253)MPSD-20120731 / I:(DE-H253)CFEL-ARD-20160914},
pnm = {899 - ohne Topic (POF4-899)},
pid = {G:(DE-HGF)POF4-899},
experiment = {EXP:(DE-MLZ)NOSPEC-20140101},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:38446882},
UT = {WOS:001187009700014},
doi = {10.1126/sciadv.adk1312},
url = {https://bib-pubdb1.desy.de/record/604463},
}