Quantum control of optically driven molecular motor

光驱动分子马达的量子控制

• 批准号: 15550002
• 负责人: FUJIMURA Yuichi
• 金额: $ 2.37万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15550002/
• 关键词: molecular motor; chirality; quantum control; coherent control; chiral molecule; pulse laser; rotational motion; 光駆動モーター; 分子ローター; ポンプ-ダンプ法

The main issues of this research project are to establish a theory of laser-induced molecular motors, and propose scenarios of their unidirectional motions. Our research works were concerned with two subjects : one was to propose a scheme of molecular motors driven in femtosecond time regime, and the other is to propose motors with rotational motions as quickly as possible. For the purpose of the first subject, a femotosecond pump-dump pulse excitation method was applied to a chiral molecular motor. That is, a rotational wave packet is created in an electronic excited state by a pumping pulse. The rotational wave packet is transferred to the ground state. We have shown by simulations that the unidirectional motion is determined by -analyzing time-resolved ionization spectra of motors. For the purpose of the other subject, a cis-trans isomerization of a molecule was considered as a model system. A unidirectional rotational motion with angular quantum number of 〜 100 in unit of Planck constant was created by an IR-UV sequential excitation. The quantum number is one-order high compared with that reported so far. It is also shown that unidirectional rotational motions of a chiral molecular motor are controlled by using laser pulses whose pulse shapes are designed by a quantum control method.

该研究项目的主要问题是建立激光诱导的分子电机的理论，以及其单向运动的建议情景。我们的研究工作与两个主题有关：一个是提出一种以飞秒时间制度驱动的分子电动机方案，另一个是提出尽快提出旋转运动的电动机。出于第一个对象的目的，将一种泵浦脉冲脉冲兴奋方法应用于手性分子运动。也就是说，旋转波包是通过泵浦脉冲以电子激发态创建的。旋转波包被转移到基态。我们通过模拟表明，单向运动是由电动机的分析电离光谱确定的。出于另一个受试者的目的，分子的顺式传播异构化被视为模型系统。在普朗克常数单位中，具有〜100的角度量子数的单向旋转运动是由IR-UV顺序兴奋产生的。与到目前为止报告相比，量子数是一阶高的。还表明，手性分子运动的单向旋转运动是通过使用脉冲形状通过量子控制方法设计的激光脉冲来控制的。

项目成果

K.Hoki: "Chiral molecular motors ignited by fem to second pumpu-dump laser pulses"J.Chem.Phys.B. (印刷中).

K.Hoki：“由 fem 激发第二泵浦转储激光脉冲的手性分子马达”J.Chem.Phys.B（出版中）。

Quantum control of unidirectional rotations of a chiral molecular motor

手性分子马达单向旋转的量子控制

• 发表时间: 2005
• 期刊: Phys.Chem.Chem.Phys. (印刷中)
• 作者: M.Yamaki et al.

Y.Fujimura, L.Gonzalez, D.Kroner, J.Manz, I.Mehdaoui, B.Schmidt: "Quantum ignition of intramolecular rotation by means of IR + UV laser pulses."Chem.Phys.Lett.. 386・4. 248-253 (2004)

Y.Fujimura、L.Gonzalez、D.Kroner、J.Manz、I.Mehdaoui、B.Schmidt：“通过 IR + UV 激光脉冲进行分子内旋转的量子点火。”Chem.Phys.Lett.. 386・4 .248-253 (2004)

Chiral molecular motors ignited by femtosecond pump-dump laser pulses

飞秒泵浦转储激光脉冲点燃手性分子马达

• 发表时间: 2004
• 期刊: J.Phys.Chem.B 108
• 作者: K.Hoki;et al.
• 通讯作者: et al.

K.Hoki, M.Yamaki, S.Koseki, Y.Fujimura: "Mechanism of unidirectional motions of chiral molecular motors driven by linearly polarized pulses"J.Chem.Phys.. 119・23. 12393-12398 (2003)

K.Hoki、M.Yamaki、S.Koseki、Y.Fujimura：“线性偏振脉冲驱动的手性分子马达的单向运动机制”J.Chem.Phys.119・23（2003）。