拓扑,多模放大诱导非互易,远程耗散耦合

IF 5.1 2区 物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY
Quantum Pub Date : 2025-09-18 DOI:10.22331/q-2025-09-18-1861
Carlos Vega, Alberto Muñoz de las Heras, Diego Porras, Alejandro González-Tudela
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引用次数: 0

摘要

已知非互易耦合或驱动会在驱动耗散玻色子晶格中诱导稳态、定向放大。这种放大现象最近与系统动态矩阵定义的非零拓扑不变量的存在有关,因此,它严重依赖于耦合的结构。在这项工作中,我们证明了由玻色子链与手性多模通道相互作用引起的非常规、非互易、远程耗散耦合的出现,然后研究了它们对拓扑放大现象的影响。我们证明这些耦合可以导致拓扑不变量值大于1,从而诱导拓扑,多模放大和亚稳行为。此外,我们还展示了这些耦合如何在存在局部参数驱动的情况下显示动态稳定的拓扑放大相位。最后,我们通过展示如何在具有多个边缘模式的二维拓扑绝缘体中自然地获得这种现象来得出结论。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Topological, multi-mode amplification induced by non-reciprocal, long-range dissipative couplings
Non-reciprocal couplings or drivings are known to induce steady-state, directional, amplification in driven-dissipative bosonic lattices. This amplification phenomenon has been recently linked to the existence of a non-zero topological invariant defined with the system's dynamical matrix, and thus, it depends critically on the couplings' structure. In this work, we demonstrate the emergence of unconventional, non-reciprocal, long-range dissipative couplings induced by the interaction of the bosonic chain with a chiral, multi-mode channel, and then study their impact on topological amplification phenomena. We show that these couplings can lead to topological invariant values greater than one which induce topological, multi-mode amplification and metastability behaviour. Besides, we also show how these couplings can also display topological amplifying phases that are dynamically stable in the presence of local parametric drivings. Finally, we conclude by showing how such phenomena can be naturally obtained in two-dimensional topological insulators hosting multiple edge modes.
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来源期刊
Quantum
Quantum Physics and Astronomy-Physics and Astronomy (miscellaneous)
CiteScore
9.20
自引率
10.90%
发文量
241
审稿时长
16 weeks
期刊介绍: Quantum is an open-access peer-reviewed journal for quantum science and related fields. Quantum is non-profit and community-run: an effort by researchers and for researchers to make science more open and publishing more transparent and efficient.
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