Nonparaxiality-triggered Landau-Zener transition in spoof plasmonic waveguides
Nonparaxiality-triggered Landau-Zener transition in spoof plasmonic waveguides
复制标题
欺骗等离子体波导中非傍轴触发的朗道-齐纳跃迁
DOI：
10.1103/physrevb.106.174301
复制
发表时间：
2022-05
影响因子：
3.7
通讯作者：
Cheng Qingqing
中科院分区：
文献类型：
--
作者：
Xie An;Zhou Shaodong;Xi Kelei;Ding Li;Pan Yiming;Ke Yongguan;Wang Huaiqiang;Zhuang Songlin;Cheng Qingqing
光子晶格由于具有傍轴波和量子粒子相似的演化过程而被广泛用于模拟量子物理。然而，非傍轴波在光子晶格中的传播打破了量子光学类比的范式。在这里，我们揭示了非傍轴性在著名的Aubry-Andr 'e-Harper模型的能谱上施加拉伸和压缩力。通过探索非傍轴效应的有限尺寸所导致的微带隙，实验表明，一个带隙的膨胀支持边界态的绝热转移，而另一个带隙的变窄则发生Landau-Zener跃迁，而在傍轴近似下，两个带隙的输运行为是相同的.我们的研究结果不仅作为未来的动态状态转移的研究的基础，但也启发应用程序利用非傍轴过渡作为一个新的自由度。
Photonic lattices have been widely used for simulating quantum physics, ow-ing to the similar evolutions of paraxial waves and quantum particles. However, nonparaxial wave propagations in photonic lattices break the paradigm of the quantum-optical analogy. Here, we reveal that nonparaxiality exerts stretched and compressed forces on the energy spectrum in the celebrated Aubry-Andr´e-Harper model. By exploring the mini-gaps induced by the finite size of the different effects of nonparaxiality, we experimentally present that the expan-sion of one band gap supports the adiabatic transfer of boundary states while Landau-Zener transition occurs at the narrowing of the other gap, whereas identical transport behaviors are expected for the two gaps under paraxial approximation. Our results not only serve as a foundation of future studies of dynamic state transfer but also inspire applications leveraging nonparaxial transitions as a new degree of freedom.
登录
查看更多内容
影响因子：
8.6
作者：
Q. Niu;M. Raizen
通讯作者：
Q. Niu;M. Raizen
影响因子：
2.9
作者：
Zhe Sun;Longwen Zhou;G. Xiao;D. Poletti;J. Gong
通讯作者：
Zhe Sun;Longwen Zhou;G. Xiao;D. Poletti;J. Gong
影响因子：
8.6
作者：
J. Broky;G. Siviloglou;A. Dogariu;D. Christodoulides
通讯作者：
J. Broky;G. Siviloglou;A. Dogariu;D. Christodoulides
影响因子：
2.9
作者：
S. Longhi;G. Valle
通讯作者：
S. Longhi;G. Valle
影响因子：
64.8
作者：
Jurgensen, Marius;Mukherjee, Sebabrata;Rechtsman, Mikael C.
通讯作者：
Rechtsman, Mikael C.