通过前向和后向三波混频在对称破缺介质中高增益涡旋光束的传播动力学
Propagation dynamics of high-gain vortex beams in symmetry-broken media via forward and backward three-wave mixing
AI总结：
研究对称破缺三能级系统中涡旋光束传播动力学，基于前向和后向三波混频过程，发现两过程能实现高增益涡旋光传输，前向有周期性振荡，后向稳定，还研究了相关参数影响，为量子相关领域及涡旋光产生提供可行方法。
AI中文摘要：
近年来，涡旋光作为一种独特的结构化光形式，因其独特性质及与物质相互作用产生的丰富物理现象而备受关注。本文基于前向和后向三波混频过程，研究了对称破缺三能级系统中涡旋光束的传播动力学。发现两个过程都能实现高增益涡旋光的传输，拓扑电荷遵循相同代数关系。前向过程呈现周期性振荡传输并调制信号涡旋场横向空间分布，后向过程具有稳定传输且产生更高增益和更好保真度的信号场。在奥特勒-汤斯分裂（ATS） regime下，两种方案中探测场失谐对增益影响可忽略，光学深度仅影响增益达到最大值的速率，峰值不变。这些结果扩展了文献[40]的工作，可为量子通信、量子计算及高增益、高保真涡旋光产生提供可行方法。
英文摘要：
In recent years, vortex light, a distinctive form of structured light, has attracted considerable attention owing to its unique properties and the rich physical phenomena arising from its interaction with matter. In this paper, we investigate the propagation dynamics of vortex beams in a symmetry-broken three-level system based on forward and backward three-wave mixing (TWM) processes. We find that both processes enable the transfer of high-gain vortex light, with the associated topological charges obeying identical algebraic relations. The forward process exhibits periodic oscillatory transmission and modulates the transverse spatial profile of the generated signal vortex field, whereas the backward process features stable transmission and produces a signal field with higher gain and improved fidelity. Under the Autler-Townes splitting (ATS) regime, the probe field detuning in both schemes has a negligible influence on the gain. Optical depth influences only the rate at which the gain approaches its maximum, while the peak value remains unchanged. These results constitute a meaningful extension of the work reported in reference [40] and may provide a feasible approach for quantum communication, quantum computation, and the generation of high-gain, high-fidelity vortex light.
