光采集效率不能依赖于光学连贯性,因为没有方向顺序
Dominic M Rouse1,2, Adesh Kushwaha3, Stefano Tomasi3
1School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
The journal of physical chemistry letters
|January 2, 2024
概括
在弱光条件下,光学连贯性不能提高分子系统中的光采集效率. 由于时间平均和分子乱,失去了连贯的控制,限制了实际应用.
科学领域:
- 量子力学就是量子力学.
- 摄影化学的使用.
- 生物物理学的生物物理.
背景情况:
- 光采集效率对于生物和人工系统至关重要.
- 光学连贯性已被提出作为一个量子控制机制来提高这种效率.
- 操纵极化或光谱相是光学连贯性控制的关键方法.
研究的目的:
- 调查使用光学连贯性用于光采集效率控制的可行性.
- 确定在哪些条件下连贯光学控制是有效或无效的.
- 澄清分子乱和时间平均在连贯控制中的作用.
主要方法:
- 采光系统的理论分析.
- 对弱光条件的检查.
- 考虑具有方向失序子单元的分子系统.
- 对时间尺度比超快更长的时间尺度的分析.
主要成果:
- 在弱光下的分子系统中,光学连贯性不会提高光采集效率.
- 在无序的样本中或在光采集过程中分子重新定位时,连贯的控制会丢失.
- 当效率是长于光学相干时间的时间平均时,光谱相位控制是无效的.
结论:
- 一致的光学控制的光采集效率不是普遍适用的.
- 时间平均和分子混乱等实际限制否定了光学连贯性的好处.
- 有效的连贯控制仅限于具有定向顺序的系统,仅依赖于极化控制.
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