Correlations in high-harmonic generation of matter-wave jets revealed by pattern recognition
Correlations in high-harmonic generation of matter-wave jets revealed by pattern recognition
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DOI：
10.1126/science.aat5008
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发表时间：
2019-02-01
期刊：
影响因子：
56.9
通讯作者：
Chin, Cheng
中科院分区：
文献类型：
--
作者：
Feng, Lei;Hu, Jiazhong;Chin, Cheng
相互作用多体系统中的关联是量子物质研究的关键。相关性的复杂性通常随着系统的发展而快速增长，因此对实验表征和直观理解提出了挑战。在强驱动的玻色-爱因斯坦凝聚体中，我们观察到玻色子激励产生的具有复杂关联的物质波喷流的高次谐波。基于模式识别方案，我们确定了一种模式的相关性，揭示了潜在的二次散射过程和高阶相关性。我们表明，模式识别提供了一个多功能的策略来可视化和分析多体系统的量子动力学。
Correlations in interacting many-body systems are key to the study of quantum matter. The complexity of the correlations typically grows quickly as the system evolves and thus presents a challenge for experimental characterization and intuitive understanding. In a strongly driven Bose-Einstein condensate, we observe the high-harmonic generation of matter-wave jets with complex correlations as a result of bosonic stimulation. Based on a pattern recognition scheme, we identify a pattern of correlations that reveals the underlying secondary scattering processes and higher-order correlations. We show that pattern recognition offers a versatile strategy to visualize and analyze the quantum dynamics of a many-body system.