Trapped-ion quantum simulation of electron transfer models with tunable dissipation

作者：Visal So, Midhuna Duraisamy Suganthi, Anup Menon, Mingjian Zhu, Roman Zhuravel, Han Pu, Peter G. Wolynes, José N. Onuchic, Guido Pagano · 发表于：Science Advances · 年份：2024 · DOI：10.1126/sciadv.ads8011 · 被引用次数：25 · 研究领域：Spectroscopy and Quantum Chemical Studies、Photochemistry and Electron Transfer Studies、Molecular Junctions and Nanostructures

Electron transfer is at the heart of many fundamental physical, chemical, and biochemical processes essential for life. The exact simulation of these reactions is often hindered by the large number of degrees of freedom and by the essential role of quantum effects. Here, we experimentally simulate a paradigmatic model of molecular electron transfer using a multispecies trapped-ion crystal, where the donor-acceptor gap, the electronic and vibronic couplings, and the bath relaxation dynamics can all be controlled independently. By manipulating both the ground-state and optical qubits, we observe the real-time dynamics of the spin excitation, measuring the transfer rate in several regimes of adiabaticity and relaxation dynamics. Our results provide a testing ground for increasingly rich models of molecular excitation transfer processes that are relevant for molecular electronics and light-harvesting systems.