Vibration-assisted coherent excitation energy transfer in a detuned dimer |
| |
Institution: | 1.School of Science, Xi'an Jiaotong University, Xi'an 710049, China;2.CEMS, RIKEN, Wako-shi, Saitama 351-0198, Japan |
| |
Abstract: | The important role of high-energy intramolecular vibrational modes for excitation energy transfer in the detuned photosynthetic systems is studied. Based on a basic dimer model which consists of two two-level systems(pigments)coupled to high-energy vibrational modes, we find that the high-energy intramolecular vibrational modes can enhance the energy transfer with new coherent transfer channels being opened when the phonon energy matches the detuning between the two pigments. As a result, the energy can be effectively transferred into the acceptor. The effective Hamiltonian is obtained to reveal the strong coherent energy exchange among the donor, the acceptor, and the high-energy intramolecular.A semi-classical explanation of the phonon-assisted mechanism is also shown. |
| |
Keywords: | excitation energy transfer high-energy intramolecular vibrational motion dynamically resonant coherent transfer |
本文献已被 CNKI 等数据库收录! |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
| 点击此处可从《中国物理 B》下载免费的PDF全文 |
|