Related Experiment Video
Updated: Mar 11, 2026

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids
Published on: May 27, 2020
Effects of Herzberg-Teller vibronic coupling on coherent excitation energy transfer
Hou-Dao Zhang1, Qin Qiao2, Rui-Xue Xu2
1Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemical Physics and Synergetic Innovation Center of Quantum Information and Quantum Physics and iChEM, University of Science and Technology of China, Hefei, Anhui 230026, China.
Abstract:
In this work, we study the effects of non-Condon vibronic coupling on the quantum coherence of excitation energy transfer, via the exact dissipaton-equation-of-motion evaluations on excitonic model systems. Field-triggered excitation energy transfer dynamics and two dimensional coherent spectroscopy are simulated for both Condon and non-Condon vibronic couplings. Our results clearly demonstrate that the non-Condon vibronic coupling intensifies the dynamical electronic-vibrational energy transfer and enhances the total system-and-bath quantum coherence. Moreover, the hybrid bath dynamics for non-Condon effects enriches the theoretical calculation, and further sheds light on the interpretation of the experimental nonlinear spectroscopy.
Related Concept Videos
π Electron Effects on Chemical Shift: Overview
NMR Spectroscopy: Spin–Spin Coupling
Hybridization of Atomic Orbitals II
Atomic Nuclei: Nuclear Relaxation Processes
π Electron Effects on Chemical Shift: Aromatic and Antiaromatic Compounds
¹H NMR: Interpreting Distorted and Overlapping Signals
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are...

