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arXiv 2603.01422physics.optics
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集成锂铌酸盐耦合环腔中的有限频率晶格

Bounded frequency lattices in integrated lithium niobate coupled ring cavities

Integrated Photonics and Applications Centre, RMIT University(集成光子与应用中心,皇家墨尔本理工大学);ARC Centre of Excellence in Optical Microcombs for Breakthrough Science (COMBS)(突破科学光学微梳 ARC 卓越中心)

Hiep X. Dinh, Armandas Balčytis, Guanghui Ren, Mei Xian Low, Arnan Mitchell, Thach G. Nguyen

AI总结:

本研究在集成锂铌酸盐耦合环腔中实现具有尖锐边界的频率晶格,通过单个辅助腔体抑制两个耦合项,并验证了其对紧束缚晶格动力学的影响,为拓扑系统和光子信息处理提供了新途径。

摘要:

合成维度提供了一种强有力的工具,利用相对简单的结构来探测高维拓扑物理,其中出现在晶格边界处的边缘态非常重要。然而,在合成维度中展示晶格边界仍较为初级。在本工作中,我们实现了一个集成耦合环系统,在超薄薄膜锂铌酸盐光子平台上,能够模拟具有尖锐边界的二维频率晶体晶格,并通过单个辅助腔体抑制两个耦合项。通过获取N=7站点晶格的离散能带结构,验证了其对紧束缚晶格动力学的影响。在光子芯片中实现拓扑系统以及利用体-边对应关系进行光学信息处理的能力,是创建稳健频率空间边界的一步关键。

英文摘要:

Synthetic dimensions provide a powerful tool that uses comparatively simple structures to probe high-dimensional topological physics, in which edge states emerging at lattice boundaries are of great importance. However, the demonstration of lattice boundaries in synthetic dimensions is relatively nascent. In this work, we realize an integrated coupled ring system in a thin-film lithium niobate photonic platform that enables the simulation of one-dimensional frequency crystal lattice with sharp boundaries, attaining suppression for two coupling terms with a single auxiliary cavity. Their effect on tight-binding lattice dynamics was verified by acquiring discretized band structures of an N = 7 site lattice. The ability to create robust frequency-space boundaries is a key step toward the realization of topological systems that harness bulk-edge correspondence as well as optical information processing in a photonic chip.

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。

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