標題: Theoretical Study of Coherent pi-Electron Rotations in a Nonplanar Chiral Aromatic Molecule Induced by Ultrafast Linearly Polarized UV Pulses
作者: Mineo, H.
Fujimura, Y.
應用化學系分子科學碩博班
Institute of Molecular science
關鍵字: Coherent pi-electron ring current;Nonplanar chiral aromatic molecule;Two-dimensional ultrafast switching
公開日期: 1-Jan-2015
摘要: We present the results of a theoretical study of pi-electron dynamics in a nonplanar chiral aromatic molecule (P)-2,2\'-biphenol. Coherent ring currents, which are one of the main observables of coherent pi-electron dynamics, are generated by applying the linearly polarized UV pulse laser, where a pair of coherent quasi-degenerated excited states is created. In this paper we review the formulations of the time-dependent coherent ring currents and angular momentum which were obtained using the density matrix theory based on the LCAO MO approximation. The results of the numerical simulation of coherent pi-electron ring currents and angular momentum in (P)-2,2\'-biphenol are shown. We also propose an ultrafast quantum switching method of pi-electron rotations and perform the sequential switching among four rotational patterns which are performed by the overlapped pump-dump laser pulses with properly selected laser polarizations, time delay and relative phases. Finally we refer to an outline for the extension of our method to N aromatic rings chain (N >= 3).
URI: http://dx.doi.org/10.1007/978-3-319-14397-2_10
http://hdl.handle.net/11536/129746
ISBN: 978-3-319-14397-2; 978-3-319-14396-5
ISSN: 1567-7354
DOI: 10.1007/978-3-319-14397-2_10
期刊: FRONTIERS IN QUANTUM METHODS AND APPLICATIONS IN CHEMISTRY AND PHYSICS
Volume: 29
起始頁: 159
結束頁: 175
Appears in Collections:Conferences Paper