论文标题

与损坏的时间反向对称性的相互作用系统的量子模拟

Quantum simulations of interacting systems with broken time-reversal symmetry

论文作者

Shapira, Yotam, Manovitz, Tom, Akerman, Nitzan, Stern, Ady, Ozeri, Roee

论文摘要

量子相互作用粒子的多体系统破裂会产生各种丰富的集体行为,因此是现代物理学研究的主要目标。量子模拟器可以可能用于探索和理解此类系统,这些系统通常超出了经典模拟的计算范围。其中,具有通用量子控制的平台可以在实验上访问广泛的物理特性。但是,以可扩展的方式同时实现了强大的可编程相互作用,强大的时间反转对称性破坏和高保真量子控制。在这里,我们意识到了通用捕获量子处理器中相互作用的,时间反转破碎量子系统的量子模拟。使用最近提出的可扩展方案,我们实施了时间反转破裂的合成量规场,在被困的离子链中首次显示,以及唯一的耦合几何形状,可以扩展到多维系统的模拟。我们在控制和测量方面的高保真单位分辨率,以及高度可编程的相互作用,使我们能够对基态呈现持续电流的基础状态进行完整的状态层析成像,并观察到具有非平凡相互作用的时间转换系统的动态。我们的结果为模拟具有广泛特征和耦合几何形状的时间反转破碎的多体系统开辟了道路。

Many-body systems of quantum interacting particles in which time-reversal symmetry is broken give rise to a variety of rich collective behaviors, and are therefore a major target of research in modern physics. Quantum simulators can potentially be used to explore and understand such systems, which are often beyond the computational reach of classical simulation. Of these, platforms with universal quantum control can experimentally access a wide range of physical properties. However, simultaneously achieving strong programmable interactions, strong time-reversal symmetry breaking, and high fidelity quantum control in a scalable manner is challenging. Here we realized quantum simulations of interacting, time-reversal broken quantum systems in a universal trapped-ion quantum processor. Using a scalable scheme that was recently proposed we implemented time-reversal breaking synthetic gauge fields, shown for the first time in a trapped ion chain, along with unique coupling geometries, potentially extendable to simulation of multi dimensional systems. Our high fidelity single-site resolution in control and measurement, along with highly programmable interactions, allow us to perform full state tomography of a ground state showcasing persistent current, and to observe dynamics of a time-reversal broken system with nontrivial interactions. Our results open a path towards simulation of time-reversal broken many-body systems with a wide range of features and coupling geometries.

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