一维腔磁子晶格中量子磁子-光子霍尔绝缘体的触发与调制

IF 4.4 Q1 OPTICS Advanced quantum technologies Pub Date : 2024-07-19 DOI:10.1002/qute.202400111
Lü Xiang, He Wang, Zi-Meng Li, Zhu-Cheng Zhang, Yi-Ping Wang
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引用次数: 0

摘要

近年来,人工系统中的量子霍尔绝缘体已成为一个快速发展的研究领域,并在观察许多新颖的拓扑现象方面取得了重大突破。然而,有关量子镁光霍尔绝缘体的报道却很少。本文提出了一种实现一维空穴磁子晶格的方案,该晶格表现出量子磁子-光子霍尔绝缘体的行为,其中每个单元格由空穴光子和磁子组成。通过调整系统参数,我们发现不仅可以触发不同的能谱结构,边缘态的分布也可以呈现翻转过程,从而实现多通道拓扑量子态传输。此外,考虑到缺陷、耗散和无序的存在,研究发现适当的缺陷可以引发新的拓扑相,而耗散只会引起能级的移动,不会改变边缘态的位置和周期,无序则会导致能带结构和边缘态的移动,从而证明了边缘态的鲁棒性。这项工作为研究拓扑镁光霍尔绝缘体提供了一种有效的方法,它将在基于镁光的量子信息处理中具有广阔的应用前景。
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Triggering and Modulation of Quantum Magnon-Photon Hall Insulator in a 1D Cavity Magnonics Lattice

Quantum Hall insulators in artificial systems have become a rapidly developing research field in recent years, and have made significant breakthroughs in observing many novel topological phenomena. However, there are few reports about quantum magnon-photon Hall insulators. Here, a scheme is proposed for implementing a 1D cavity magnonics lattice that exhibits quantum magnon-photon Hall insulator behaviors, where each unit cell comprises cavity photons and magnons. By adjusting the system parameters, it is found that not only different energy spectrum structures can be triggered, but also the distribution of the edge states can show the flipping process, which allows the achievement of the multi-channel topological quantum state transmission. In addition, considering the presence of defects, dissipation, and disorder, it is found that appropriate defects can trigger new topological phases, while dissipation only causes shifts in energy levels without changing the position and period of edge states, and disorder leads to shifts in band structures and edge states, thus demonstrating the robustness of edge states. This work offers an effective way to study topological magnon-photon Hall insulators, which will have promising applications in magnon-based quantum information processing.

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Front Cover: Laser Beam Induced Charge Collection for Defect Mapping and Spin State Readout in Diamond (Adv. Quantum Technol. 12/2024) Inside Front Cover: Numerical Investigation of a Coupled Micropillar - Waveguide System for Integrated Quantum Photonic Circuits (Adv. Quantum Technol. 12/2024) Back Cover: Purity-Assisted Zero-Noise Extrapolation for Quantum Error Mitigation (Adv. Quantum Technol. 12/2024) Issue Information (Adv. Quantum Technol. 12/2024) Issue Information (Adv. Quantum Technol. 11/2024)
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