Sun Ke, Kang Mingyu, Nuomin Hanggai, Schwartz George, Beratan David N, Brown Kenneth R, Kim Jungsang
Duke Quantum Center, Duke University, Durham, NC, USA.
Department of Physics, Duke University, Durham, NC, USA.
Nat Commun. 2025 Apr 30;16(1):4042. doi: 10.1038/s41467-025-59296-y.
The spin-boson model, involving spins interacting with a bath of quantum harmonic oscillators, is a widely used representation of open quantum systems that describe many dissipative processes in physical, chemical and biological systems. Trapped ions present an ideal platform for simulating the quantum dynamics of such models, by accessing both the high-quality internal qubit states and the motional modes of the ions for spins and bosons, respectively. We demonstrate a fully programmable method to simulate dissipative dynamics of spin-boson models using a chain of trapped ions, where the initial temperature and the spectral densities of the boson bath are engineered by controlling the state of the motional modes and their coupling with qubit states. Our method provides a versatile and precise experimental tool for studying open quantum systems.
自旋玻色子模型涉及自旋与量子谐振子浴的相互作用，是开放量子系统的一种广泛应用的表示形式，用于描述物理、化学和生物系统中的许多耗散过程。捕获离子为模拟此类模型的量子动力学提供了一个理想平台，分别通过利用高质量的内部量子比特态以及离子的运动模式来实现自旋和玻色子。我们展示了一种使用捕获离子链来模拟自旋玻色子模型耗散动力学的完全可编程方法，其中玻色子浴的初始温度和谱密度可通过控制运动模式的状态及其与量子比特态的耦合来设计。我们的方法为研究开放量子系统提供了一种通用且精确的实验工具。
