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arXiv · 2606.13930

Quantum Simulation of Spin-Dependent Electron Transfer in a Synthetic Chiral Lattice with a Trapped Ion

Yi Li·Chuyuan Chen·Xingyu Zhao·Zihan Xie·Min Jiang·Xinhua Peng·Han Pu·Lyuzhou Ye·Yao Wang·Guozhen Zhang·Yiheng Lin
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Abstract

Electron transfer through chiral structures can exhibit spin asymmetry, known as the chiral-induced spin selectivity effect, whose microscopic origin remains an open question. While path-interference within the chiral moiety has been proposed as a key mechanism, its experimental validation requires precise and versatile tunability of system parameters. Here we implement a programmable quantum simulation of spin-dependent electron transfer in a donor--chiral-bridge--acceptor model using a trapped ion. The bridge is encoded in internal states of the ion with tunable nearest- and next-nearest-neighbor couplings, while donor and acceptor states are coupled via a spectator bosonic motional mode. We observe spin-dependent interference within the bridge, and further reveal spin-dependence in donor-to-acceptor transfer dynamics, controlled by amplitude and phase of the coupling parameter. Our results identify interference among spin-dependent pathways as a microscopic origin of spin-dependent transfer, and open a route toward quantum simulations of complex chiral lattices with multi-level and bosonic degrees of freedom.

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Yi Li, Chuyuan Chen, Xingyu Zhao, Zihan Xie, Min Jiang, Xinhua Peng, Han Pu, Lyuzhou Ye, Yao Wang, Guozhen Zhang, Yiheng Lin. 2026-06-11. Quantum Simulation of Spin-Dependent Electron Transfer in a Synthetic Chiral Lattice with a Trapped Ion. https://arxiv.org/abs/2606.13930

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