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光学非互易性因其能够有效地用于全光二极管、隔离器等新型光子器件的设计，近年来相关研究备受关注。我们小组在工作[Physical Review Reasearch 6 ,023122(2024)]中提出利用晶格缺陷打破极化率空间对称性实现了非互易光反射，该工作中缺陷是由固定数量空晶格周期性调制的。为了进一步展开缺陷原子晶格中非互易光传播特性的研究，我们创新性地提出用斐波那契数列调控空晶格的排布规律，构成准周期缺陷原子晶格系统，实现了探测光左右反射非互易的操控。分析了单个准周期中满晶格数量、斐波那契数列和准周期数对非互易反射的优化过程以及产生影响的物理实质，并讨论了耦合场失谐对非互易频率域和带宽的调制。这些结果为宽频、对比度高的非互易光反射的调控提供了更多的自由度，在量子计算和信息处理领域具有潜在的应用。In order to further investigate the non-reciprocity of light propagation in the defective atomic lattices, due to its effective application in designing novel photonic devices, such as all-optical diodes and isolators, which are powerful tools for information processing and quantum simulation. We innovatively propose to use the Fibonacci sequence to modulate the arrangement of vacant lattice cells forming a quasi periodic defective atomic lattices. In the electromagnetically induced transparency window, the probe light is almost not absorbed with the control of a strong coupling field [see Fig. 1]. The numerical simulation indicates that a wide nonreciprocal reflection band can be achieved by modulating the number of filled lattice cells, Fibonacci sequence, the period number in a single quasi period [see Fig. 2]. These results provide more degrees of freedom for the regulation of nonreciprocal reflection with wide bandwidth and high contrast, and have potential applications in quantum computing and information processing.
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