Anomalous hybridization of spectral winding topology in quantized steady-state responses
Anomalous hybridization of spectral winding topology in quantized steady-state responses
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DOI：
10.1103/physrevb.105.l241402
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发表时间：
2021-12
影响因子：
3.7
通讯作者：
Huimin Liang;Sen Mu;J. Gong;Linhu Li
中科院分区：
文献类型：
--
作者：
Huimin Liang;Sen Mu;J. Gong;Linhu Li
Quantized response is one distinguishing feature of a topological system. In non-Hermitian systems, the spectral winding topology yields quantized steady-state response. By considering two weakly coupled non-Hermitian chains, we discover that the spectral winding topology of one chain can be probed by a steady-state response defined solely on the other chain, even when other important properties, e.g., {energetics} and entanglement entropy, indicate that eigen-solutions are effectively {not hybridized} between the two chains. This intriguing phenomenon, as carefully investigated in a large parameter space with a varying system size, not only offers a new angle to understand interchain signal propagation in a non-Hermitian setting but also reveals unexpected physics of spectral winding topology vs quantized response.
