Basis-Independent Coherence Dynamics of Tripartite States under Pure Dephasing

• URL: http://arxiv.org/abs/2607.13512v2
• Date: Thu, 16 Jul 2026 15:56:10 GMT
• Title: Basis-Independent Coherence Dynamics of Tripartite States under Pure Dephasing
• Abstract summary: We study basis-independent quantum coherence for several representative tripartite pure and mixed states.<n>Non-Markovian environments give rise to nearly frozen coherence dynamics for both pure and mixed states.<n>Results provide new insights into the preservation of intrinsic multipartite coherence in open quantum systems.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Quantum coherence is a fundamental quantum resource whose preservation under environmental interactions is essential for quantum information processing. While most studies have focused on basis-dependent coherence measures, the dynamics of intrinsic coherence quantified by basis-independent measures remain largely unexplored. In this work, we investigate the dynamics of basis-independent quantum coherence for several representative tripartite pure and mixed states subjected to local and common dephasing environments in both Markovian and non-Markovian regimes. We show that Markovian local dephasing leads to state-dependent coherence degradation, whereas collective dephasing significantly enhances coherence preservation through decoherence-free sectors. More importantly, non-Markovian environments give rise to nearly frozen coherence dynamics for both pure and mixed states, demonstrating the remarkable robustness of intrinsic coherence against dephasing environment. A comparison with the measure of relative entropy of coherence reveals that basis-independent coherence measure exhibits substantially greater resilience and qualitatively different dynamical behaviour than its basis-dependent counterpart. These results provide new insights into the preservation of intrinsic multipartite coherence in open quantum systems and highlight basis-independent coherence as a robust quantum resource for realistic noisy quantum technologies.

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