Exceptional points in the dynamics of electrically pumped semiconductor nanolaser arrays

Guojie Zhou; Yuanlong Fan; K. Alan Shore; Yufei Wang; Wanhua Zheng

doi:10.1103/5jbr-l7y3

Exceptional points in the dynamics of electrically pumped semiconductor nanolaser arrays

Guojie Zhou ^1,2, Yuanlong Fan ^1,2,*, K. Alan Shore ³, Yufei Wang^4,5,6,†, and Wanhua Zheng^4,5,6,‡

¹Hangzhou Institute of Technology, Xidian University, Hangzhou 311200, China
²School of Optoelectronic Engineering, Xidian University, Xi'an 71 0071, China
³School of Computer Science and Electronic Engineering, Bangor University, Bangor LL57 1UT, United Kingdom
⁴Laboratory of Solid-State Optoelectronics Information Technology, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
⁵Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
⁶College of Future Technology, University of Chinese Academy of Sciences, Beijing 101408, China

^*Contact author: fanyuanlong@xidian.edu.cn
^†Contact author: yufeiwang@semi.ac.cn
^‡Contact author: whzheng@red.semi.ac.cn

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Phys. Rev. A 113, 013505 – Published 2 January, 2026

DOI: https://doi.org/10.1103/5jbr-l7y3

Abstract

The dynamics of electrically pumped nanolaser arrays is analyzed within the framework of non-Hermitian photonics. By employing a small-signal analysis, general features of the dynamics including parity-time symmetry analogous behavior and exceptional points are extracted. Qualitative features of the device dynamics are revealed in the vicinity of exceptional points. It is shown that nanolasers, characterized by Purcell-enhanced spontaneous emission, manifest periodic dynamics while analogous lasers with no Purcell enhancement exhibit chaotic dynamics. The opportunity for utilizing such laser arrays for exploring the ramifications of non-Hermitian photonics is noted.

Physical Review A

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Exceptional points in the dynamics of electrically pumped semiconductor nanolaser arrays

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Exceptional points in the dynamics of electrically pumped semiconductor nanolaser arrays

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