分子磁体中通过激活禁戒跃迁实现的高增益涡旋光转移
High-gain vortex transfer via activated forbidden transitions in molecular magnets
- School of Physics, Beihang University（北京航空航天大学物理学院）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
本研究利用分子磁体中的三能级阶梯结构激活禁戒跃迁，实现高增益涡旋光转移，并发现ATS效应在非线性混频中增益优于EIT，为固态量子信息处理提供新途径。
AI中文摘要：
涡旋光因其独特的性质和在多个领域的广泛应用潜力，近年来引起了广泛关注。本文利用分子磁体中常规的三能级阶梯型结构，通过激活原本禁戒的跃迁，实现了高增益的涡旋光转移。我们证明了所产生涡旋信号场的强度和相位由探测场的失谐量和控制场的强度决定，并且在涡旋转移过程中，入射场和产生场的拓扑荷满足明确的代数关系。此外，我们进一步表明，在分子磁体中，非线性三波混频的宽参数范围内，Autler-Townes分裂（ATS）效应所产生的涡旋信号场增益大于电磁感应透明（EIT）效应。这一结果表明，EIT作为非线性光学效应主导增强器的普遍观点可能并不普遍适用。此外，我们重新审视了以往的研究，并重新考察了涡旋光束转移效率的表征，强调在多光束相互作用系统中需要更谨慎的解释。利用分子磁体的长自旋相干性和微波跃迁特性，我们的结果可能有助于在固态平台上实现量子信息传输、存储、计算和雷达成像。
英文摘要：
Vortex light has garnered considerable interest in recent years owing to its distinctive properties and broad application potential. In this paper, we employ a conventional three-level ladder-type configuration in molecular magnets to realize high-gain vortex light transfer by enabling otherwise forbidden transitions. We demonstrate that the intensity and phase of the generated vortex signal field are governed by the detuning of the probe field and the strength of the control field, and that the topological charges of the incident and generated fields obey a well-defined algebraic relation during the vortex transfer process. Furthermore, we show that, in molecular magnets, the Autler-Townes splitting (ATS) effect yields a larger vortex signal field gain than electromagnetically induced transparency (EIT) over a broad parameter range in nonlinear three-wave mixing. This result suggests that the widely accepted view of EIT as the dominant enhancer of nonlinear optical effects may not hold universally. In addition, we revisit previous studies and re-examine the characterization of vortex beam transfer efficiency, emphasizing the need for a more careful interpretation in multi-beam interaction systems. Leveraging the long spin coherence and microwave transitions of molecular magnets, our results may enable quantum information transfer, storage, computing, and radar imaging in solid-state platforms.
