arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新，休息一下吧，周末愉快~~
arXiv 2602.01324physics.optics
收藏

通过k空间折叠探针校准暗激子储备量

Population Metrology of a Hidden Exciton Reservoir: Quasi-Thermalization versus Localization

Terahertz Technology Innovation Research Institute, and Shanghai Key Lab of Modern Optical System, University of Shanghai for Science and Technology（上海理工大学太赫兹技术创新研究院和现代光学系统上海市重点实验室）；National Key Laboratory of Terahertz Perception and Communication (TPCL)（太赫兹感知与通信国家重点实验室）；Laboratory of Integrated Opto-Mechanics and Electronics, University of Shanghai for Science and Technology（上海理工大学集成光机电实验室）；Shanghai Institute of Intelligent Science and Technology, Tongji University（同济大学上海智能科学与技术研究院）

Guangyu Dai, Xinyu Zhang, Jiaxin Yu, Zi'ang Xing, Miao Cai, Zhaoqi Gu, Junyuan Zhang, Lin Dou, Fuxing Gu, Yiming Zhu, Songlin Zhuang

备注：
6
阅读 PDF
arXiv 页面 ↗HTML 原文 ↗

AI总结：

通过k空间折叠探针校准，确定单层过渡金属二硫化物中暗激子储备库的粒子分布，获得室温下暗到亮粒子数比ND/NB=4.3，为暗储备库和相互作用驱动的二维激子相提供定量热力学基准。

摘要：

单层过渡金属二硫化物中的禁戒激子由于其对 exciton 动力学和许多体相互作用的主导作用，构成了一个主要的隐藏储备库。然而，确定该储备库内粒子分布仍具有挑战性，因为检测的亮度将辐射率修改与收集效率混淆，模糊了强度与粒子数之间的联系。在这里，我们通过校准位置和取向解析的检测响应，使这个逆问题变得明确。结合微球 enabled 的k空间折叠与Green张量准正模校准，我们解耦了辐射率修改与收集效率。我们提取出室温下暗到亮粒子数比ND/NB=4.3，与连续波激发下的近热化 manifold 一致。这个校准的粒子数指标为暗储备库和相互作用驱动的二维激子相提供了定量热力学基准。

英文摘要：

Long-lived dark states can dominate the lowest-energy manifold of optically driven quantum materials, yet their occupation remains difficult to quantify, leaving it unclear whether it reflects thermal redistribution or kinetic trapping. We combine microsphere-enabled far-field access with quantitative optical-response calibration to retrieve dark-to-bright population ratios in monolayer WSe2. Temperature-dependent measurements and controlled defect enhancement separate mobile and localized contributions. Near room temperature, the mobile dark-to-bright ratio reaches approximately 65% of its Boltzmann limit, indicating substantial but incomplete quasi-thermalization, whereas the low-temperature excess is dominated by defect-assisted localization. Dark-state dominance alone therefore does not establish equilibration, a distinction essential for interpreting transport and collective phases in optically hidden quasiparticle reservoirs.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

↑