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Detection of Electronic Coherence via Two-Dimensional Electronic Spectroscopy in Condensed Phase
Yu-xiang Weng*
Author NameAffiliationE-mail
Yu-xiang Weng* Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China yxweng@iphy.ac.cn 
Abstract:
Two dimensional Fourier transform electronic spectroscopy (2DES) in the visible region enables direct observation of complex dynamics of molecules including quantum coherence in the condensed phase.This review aims to provide a bridge between the principles and intuitive physical description of 2DES for tutorial purpose.Special emphasis is laid upon how 2DES circumvents the restrictions from both uncertainty principle and the wave-packet collapse during the coherent detection,leading to the successful detection of the coherence in terms of energy difference between the eigenstates showing as the quantum beats;then upon the possible mixing among the pure electronic transition,single-mode and multi-mode coupled vibronic transition leading to the observed beating phenomena.Finally,recent advances in experimentally distinguishing between the electronic coherence and the vibrational coherence are briefly discussed.
Key words:  Quantum coherence  Uncertainty principle  Wave-packet collapse  Multi-mode vibronic coupling  Two dimensional electronic spectroscopy
FundProject:This work was supported by the National Natural Science Foundation of China (No.21227003, No.21433014, No.11721404).
凝聚相中电子相干态的二维电子光谱测量
翁羽翔*
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DOI:10.1063/1674-0068/31/cjcp1803055
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