Probing many-body dynamics on a 51-atom quantum simulator
Probing many-body dynamics on a 51-atom quantum simulator
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DOI：
10.1038/nature24622
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发表时间：
2017-11-30
期刊：
影响因子：
64.8
通讯作者：
Lukin, Mikhail D.
中科院分区：
文献类型：
--
作者：
Bernien, Hannes;Schwartz, Sylvain;Lukin, Mikhail D.
可控的，连贯的多体系统可以提供量子物质基本属性的见解，实现新的量子阶段，并最终可能导致计算系统以基于经典方法优于现有计算机的计算系统。在这里，我们演示了一种创建受控的多体量子物质的方法，该方法结合了确定性准备的，可重新配置的单独捕获的冷原子，具有强烈的相干相互作用，通过激发到Rydberg States。我们实现了一个可编程型型量子自旋模型，可调相互作用和最多51吨的系统大小。在该模型中，我们观察到分配各种离散对称性的空间有序状态，验证这些状态的高保真制备，并研究大量原子阵列中整个相变的动力学。特别是，我们观察到鲁棒的许多动力学，对应于快速量子淬灭后的持续振荡，这是由于跨相边界突然过渡而导致的。我们的方法提供了一种在可编程量子模拟器上探索多体现象的方法，并可以实现新的量子算法。
Controllable, coherent many-body systems can provide insights into the fundamental properties of quantum matter, enable the realization of new quantum phases and could ultimately lead to computational systems that outperform existing computers based on classical approaches. Here we demonstrate a method for creating controlled many-body quantum matter that combines deterministically prepared, reconfigurable arrays of individually trapped cold atoms with strong, coherent interactions enabled by excitation to Rydberg states. We realize a programmable Ising-type quantum spin model with tunable interactions and system sizes of up to 51 qubits. Within this model, we observe phase transitions into spatially ordered states that break various discrete symmetries, verify the high-fidelity preparation of these states and investigate the dynamics across the phase transition in large arrays of atoms. In particular, we observe robust manybody dynamics corresponding to persistent oscillations of the order after a rapid quantum quench that results from a sudden transition across the phase boundary. Our method provides a way of exploring many-body phenomena on a programmable quantum simulator and could enable realizations of new quantum algorithms.