Correlation engineering via nonlocal dissipation
Correlation engineering via nonlocal dissipation
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DOI：
10.1103/physrevresearch.4.013089
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发表时间：
2021-01
影响因子：
4.2
通讯作者：
K. Seetharam;Alessio Lerose;R. Fazio;J. Marino
中科院分区：
文献类型：
--
作者：
K. Seetharam;Alessio Lerose;R. Fazio;J. Marino
控制量子多体系统中相关性的传播是量子科学和技术核心的一个关键挑战。相关性通常会因系统与其环境之间的耦合而产生的耗散而被破坏。在这里，我们证明耗散可以用来以一种易于调节的方式设计各种时空相关性剖面。我们描述了如何在光学腔中捕获的冷原子中实现任何平移不变空间轮廓的耗散。均匀的外场和空间剖面的选择可用于设计耗散何时以及如何创建或破坏相关性。我们通过优先在所需的波矢处产生纠缠来演示这种控制。因此，我们将非局域耗散作为工程量子信息的远非平衡动力学的新途径，在量子计量、状态准备和传输方面具有潜在的应用。
Controlling the spread of correlations in quantum many-body systems is a key challenge at the heart of quantum science and technology. Correlations are usually destroyed by dissipation arising from coupling between a system and its environment. Here, we show that dissipation can instead be used to engineer a wide variety of spatio-temporal correlation profiles in an easily tunable manner. We describe how dissipation with any translationally-invariant spatial profile can be realized in cold atoms trapped in an optical cavity. A uniform external field and the choice of spatial profile can be used to design when and how dissipation creates or destroys correlations. We demonstrate this control by preferentially generating entanglement at a desired wavevector. We thus establish non-local dissipation as a new route towards engineering the far-from-equilibrium dynamics of quantum information, with potential applications in quantum metrology, state preparation, and transport.