期刊
JOURNAL OF CHEMICAL PHYSICS
卷 145, 期 14, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4964392
关键词
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资金
- National Science Foundation [PHY-0649578]
- DOE
- U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES), Chemical Sciences, Geosciences, and Biosciences Division
- Direct For Mathematical & Physical Scien
- Division Of Physics [1504584] Funding Source: National Science Foundation
Conical intersections (CIs) between molecular potential energy surfaces with non-vanishing non-adiabatic couplings generally occur in any molecule consisting of at least three atoms. They play a fundamental role in describing the molecular dynamics beyond the Born-Oppenheimer approximation and have been used to understand a large variety of effects, from photofragmentation and isomerization to more exotic applications such as exciton fission in semiconductors. However, few studies have used the features of a CI as a tool for coherent control. Here we demonstrate two modes of control around a conical intersection. The first uses a continuous light field to control the population on the two intersecting electronic states in the vicinity of a CI. The second uses a pulsed light field to control wavepackets that are subjected to the geometric phase shift in transit around a CI. This second technique is likely to be useful for studying the role of nuclear dynamics in electronic coherence phenomena. (C) 2016 Author(s).
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