利用超激发在亚波长三角形三聚体中制备集体态
Collective-State Preparation in a Subwavelength Triangular Trimer Using SUPER Excitation
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中文总结 AI 辅助
研究利用SUPER激发在亚波长三角形三聚体中制备集体态，通过定制超短脉冲数值研究集体目标态选择性制备，发现态选择性和制备效率与发射体间距有关，该技术对位置缺陷和频率不均匀性有鲁棒性，为相关领域提供探测途径。
中文摘要 AI 辅助
量子发射体种群的摆动上升（SUPER）方案最近被提出作为一种确定性方法，用于在两个强偶极耦合量子发射体中制备集体辐射态。本文将该方法扩展到受生物光捕获环几何结构启发的偶极耦合两能级量子发射体的等边亚波长三角形三聚体。通过定制的、时间重叠的、红失谐超短SUPER脉冲，对集体目标态的选择性制备进行了数值研究。发现态选择性和制备效率强烈依赖于发射体间距。特别是在深亚波长间距下，对称集体态可确定性地以近单位效率制备，而在较大发射体间距下，反转效率和态选择性显著降低。此外，该态制备技术对单个量子发射体的合理静态位置缺陷和现场频率不均匀性具有一定的鲁棒性。结果表明，深亚波长三角形三聚体以及更广泛的高度紧凑环几何结构是通过SUPER激发确定性制备集体辐射态的优秀候选者。这些预测可以通过固态发射体和分子实现。研究结果为直接探测生物和生物启发的合成纳米光子环配置中‘纯’电磁相互作用层提供了一条途径，并可能在光子学、量子信息处理和计量学中具有相关性。
英文摘要
The Swing-UP of quantum EmitteR population (SUPER) scheme has recently been proposed as a deterministic method for the preparation of collective radiative states in two strongly dipole-coupled quantum emitters (Phys. Rev. Res. \textbf{8}, 013179 (2026)). Here, we apply this approach to an equilateral subwavelength triangular trimer of dipole-coupled two-level quantum emitters (QEs), loosely inspired by biological light-harvesting ring geometries, and demonstrate that tailored, time-overlapping, red-detuned ultrashort SUPER pulses can selectively prepare collective states in a $C_3$-symmetric system, including energetically degenerate eigenstates that are resolved through site-dependent optical phases. We find that both the state selectivity and the preparation efficiency depend strongly on the inter-emitter spacing. In particular, at deep-subwavelength separations, the symmetric collective state can be deterministically prepared with near-unity efficiency (approximately $94\%$), whereas the inversion efficiency and state selectivity are significantly lower at larger inter-emitter separations. Furthermore, this state preparation technique inherits a certain degree of robustness against reasonable static position imperfections and on-site frequency inhomogeneities of the individual QEs. Our results demonstrate that deep-subwavelength triangular trimers and, more broadly, highly compact ring geometries are excellent candidates for the deterministic preparation of collective radiative states via SUPER excitation. These predictions could be realized with solid-state emitters and molecules. Our findings offer a route toward the direct probing of the `pure' electromagnetic layer of interaction in biological and bio-inspired synthetic nanophotonic ring configurations, with possible relevance in photonics, quantum information processing, and metrology.
发表机构
- Institut für Theoretische Physik, Universität Innsbruck（因斯布鲁克大学理论物理研究所）
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