Quantum dynamics of qutrit systems driven by the local non-Hermitian Hamiltonian

Yi-Li Zhou, Jing-Wei Wen, Chao Zheng and Jin-Ming Liu

Chaos, Solitons & Fractals, 2026, vol. 202, issue P1

Abstract: The exploration of qutrit systems beyond Hermiticity constraints is of critical importance for deepening the understanding of higher-dimensional quantum physics and expanding the capabilities of quantum information processing. In this work, we comprehensively investigate the dynamic features of single-body and many-body qutrit systems under local non-Hermitian Hamiltonian based on the theoretical derivations and numerical simulations. We find that, similar to the qubit systems, the dynamic behaviors of von Neumann entropy, information flow, and entanglement are all related to the quantum phase, which oscillate with time in the unbroken phase, exponentially decay in the broken phase, and exhibit power-law attenuation at the transition point. And there still exists the phenomenon of entanglement restoration, inconsistency of subsystem behavior when expanding from two-body to three-body entangled systems. However, we also reveal some novel phenomena, including the information flow intensity related to the initial quantum states in the unbroken phase, the initial-state-independent steady-state in the broken phase, and the dissipative correlation that appears in the three-body coupled system. Our work lays the foundation for systematically understanding the dynamic evolution of non-Hermitian qutrit systems.

Keywords: Quantum dynamics; Qutrit systems; Non-Hermitian Hamiltonian; Entanglement (search for similar items in EconPapers)
Date: 2026
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Persistent link: https://EconPapers.repec.org/RePEc:eee:chsofr:v:202:y:2026:i:p1:s096007792501522x

DOI: 10.1016/j.chaos.2025.117509

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