Atom-by-atom assembly of defect-free one-dimensional cold atom arrays
Atom-by-atom assembly of defect-free one-dimensional cold atom arrays
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DOI：
10.1126/science.aah3752
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发表时间：
2016-11-25
期刊：
影响因子：
56.9
通讯作者：
Lukin, Mikhail D.
中科院分区：
文献类型：
--
作者：
Endres, Manuel;Bernien, Hannes;Lukin, Mikhail D.
实现大规模完全可控量子系统是现代物理科学中令人兴奋的前沿领域。我们使用逐个原子组装来实现一个平台，用于确定性地准备单独控制的冷原子的常规一维阵列。在我们的方法中，测量和反馈程序消除了与概率陷阱占据相关的熵，并在不到 400 毫秒的时间内产生超过 50 个原子的无缺陷阵列。该技术基于对 100 个光镊的快速实时控制，我们用光镊将原子排列成所需的几何图案，并通过用储存库中的剩余原子替换丢失的原子来维持这些配置。这种自下而上的方法可以实现可扩展多体系统的受控工程，用于量子信息处理、量子模拟和精密测量。
The realization of large-scale fully controllable quantum systems is an exciting frontier in modern physical science. We use atom-by-atom assembly to implement a platform for the deterministic preparation of regular one-dimensional arrays of individually controlled cold atoms. In our approach, a measurement and feedback procedure eliminates the entropy associated with probabilistic trap occupation and results in defect-free arrays of more than 50 atoms in less than 400 milliseconds. The technique is based on fast, real-time control of 100 optical tweezers, which we use to arrange atoms in desired geometric patterns and to maintain these configurations by replacing lost atoms with surplus atoms from a reservoir. This bottom-up approach may enable controlled engineering of scalable many-body systems for quantum information processing, quantum simulations, and precision measurements.