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Title: Observation of an excitonic quantum coherence in CdSe nanocrystals
Authors: Dong, Shuo
Trivedi, Dhara
Chakrabortty, Sabyasachi
Kobayashi, Takayoshi
Chan, Yinthai
Prezhdo, Oleg V.
Loh, Zhi-Heng
Keywords: DRNTU::Science::Chemistry
Issue Date: 2015
Source: Dong, S., Trivedi, D., Chakrabortty, S., Kobayashi, T., Chan, Y., Prezhdo, O. V., et al. (2015). Observation of an excitonic quantum coherence in CdSe nanocrystals. Nano Letters, 15(10), 6875-6882.
Series/Report no.: Nano Letters
Abstract: Recent observations of excitonic coherences within photosynthetic complexes suggest that quantum coherences could enhance biological light harvesting efficiencies. Here, we employ optical pump–probe spectroscopy with few-femtosecond pulses to observe an excitonic quantum coherence in CdSe nanocrystals, a prototypical artificial light harvesting system. This coherence, which encodes the high-speed migration of charge over nanometer length scales, is also found to markedly alter the displacement amplitudes of phonons, signaling dynamics in the non-Born–Oppenheimer regime.
ISSN: 1530-6984
DOI: 10.1021/acs.nanolett.5b02786
Schools: School of Physical and Mathematical Sciences 
Rights: © 2015 American Chemical Society. This is the author created version of a work that has been peer reviewed and accepted for publication by Nano Letters, American Chemical Society. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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