态选择性分子取向：振动Autler-Townes绝热通道
State-selective molecular orientation by vibrational Autler-Townes adiabatic passage
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中文总结 AI 辅助
提出全光Autler-Townes态选择性绝热通道，将分子制备到单一$|J,M\ angle$子能级，在$^{13}$CO$_2$中验证分裂并预测转移效率接近90%，可扩展至多种分子。
中文摘要 AI 辅助
控制分子角动量取向能够实现分子相互作用的状态分辨研究，并为量子信息处理提供基础。本文提出全光Autler-Townes态选择性绝热通道（ASAP）方法，将分子制备到单一的$|J,M\ angle$子能级。通过强耦合场产生的Autler-Townes分支被选择性布居，并绝热映射到目标振动能态。我们在$^{13}$CO$_2$中解析了失谐依赖的振动转动Autler-Townes分裂，为目标缀饰分支的选择性激发建立了光谱学基础。由这些光谱标定的密度矩阵模型预测转移效率接近90%。该方案可利用电子基态内毫秒级振动辐射寿命，并可扩展到具有红外活性振动模式的极性和非极性分子。
英文摘要
Control of molecular angular momentum orientation enables state-resolved studies of molecular interactions and provides a basis for quantum information processing. Here we propose all-optical Autler-Townes state-selective adiabatic passage (ASAP) to prepare molecules in a single $|J,M\rangle$ sublevel. An Autler-Townes branch created by a strong coupling field is selectively populated and adiabatically mapped onto the target vibrational state. We resolve detuning-dependent rovibrational Autler-Townes splitting in $^{13}$CO$_2$, establishing the spectroscopic basis for the selective excitation of the target dressed branch. The density-matrix model calibrated by these spectra predicts transfer approaching 90\%. The scheme can exploit millisecond vibrational radiative lifetimes within the electronic ground state and extend to polar and nonpolar molecules with infrared-active vibrational modes.
发表机构
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China（中国科学技术大学合肥微尺度物质科学国家研究中心）
- Hefei National Laboratory, University of Science and Technology of China（中国科学技术大学合肥国家实验室）
- State Key Laboratory of Chemical Reaction Dynamics, University of Science and Technology of China（中国科学技术大学化学反应动力学国家重点实验室）
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