AI 中文总结
本研究在可调耦合的双光诱导阱多模激子-极化激元系统中，观测到相干类阈值交叉，利用短非共振脉冲实现多模相位控制，保真度超0.995，可扩展至更大耦合阱网络。
AI 中文摘要
我们研究了在两个具有可调阱间耦合的光诱导阱构成的多模激子-极化激元系统中，互相干的形成与确定性相位控制。随着阱间耦合通道逐步开启，一阶互相干从接近零的值急剧上升至接近1，揭示出从弱关联到高度相干动力学的类阈值交叉。我们利用短的空间局域非共振脉冲实现了确定性多模相位控制，该脉冲可在保持所选极化激元凝聚体模式振幅几乎不变的同时，设定它们之间的相位关系。诱导的相位变换可从时间分辨干涉图直接读出，且在中等和高相干区域的不同模式组中均得以实现。在简化的四模描述下，控制脉冲对相干多模场施加了有效相位算子，其保真度超过0.995。该方法可扩展至更大的耦合阱网络，为在日益复杂的多模极化激元态中实现相位关系的光学控制提供了途径。
英文摘要
We investigate the formation of mutual coherence and deterministic phase control in a multimode exciton-polariton system realized in two optically induced traps with tunable intertrap coupling. As the coupling channel between the traps is progressively opened, the mutual first-order coherence rises sharply from nearly zero to values close to unity, revealing a threshold-like crossover from weakly correlated to highly coherent dynamics. We demonstrate deterministic multimode phase control with a short spatially localized nonresonant pulse, which allows the phase relations between selected polariton condensate modes to be set while keeping their amplitudes nearly unchanged. The induced phase transformation is read out directly from time-resolved interferograms and realized for different sets of modes in both intermediate- and high-coherence regimes. Within a reduced four-mode description, the control pulse implements an effective phase operator on the coherent multimode field with a fidelity exceeding 0.995. The same approach can be extended to larger networks of coupled traps, offering a route to optical control over phase relations in increasingly complex multimode polariton states.
