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arXiv · 2607.19286

Steady States of a Single Trapped-Ion Spin Coupled to an Engineered Non-Markovian Bath

Anthony Vogliano·Lewis Hahn·Fabien Lefebvre·Jingwen Zhu·Sakshee Patil·Mahmood Sabooni·Zhexuan Gong·Rajibul Islam
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Abstract

Quantum simulation of open quantum systems offers a pathway towards better understanding various non-equilibrium physics that would otherwise be challenging to study. While most open quantum systems studied are modeled as being memory-less (obeying the Markov approximation), real baths generally are influenced by the system-bath interaction, and some systems existing in structured non-Markovian environments can display novel behavior as a result. Here we utilize a trapped ion quantum simulator to simulate a single spin-$1/2$ driven-dissipative system with a non-Markovian dissipation channel, and experimentally compare steady-states to those from an analogous Markovian bath. We observe that a non-Markovian dissipative channel can shift the steady-state even for a single qubit, to a regime inaccessible for Markovian dissipation. The techniques used here are compatible with many-body extensions of the model, which can not be simulated efficiently on a classical computer in general. Our work also opens up new possibilities in quantum reservoir engineering beyond the Markovian regime.

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Anthony Vogliano, Lewis Hahn, Fabien Lefebvre, Jingwen Zhu, Sakshee Patil, Mahmood Sabooni, Zhexuan Gong, Rajibul Islam. 2026-07-21. Steady States of a Single Trapped-Ion Spin Coupled to an Engineered Non-Markovian Bath. https://arxiv.org/abs/2607.19286

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