Arrays of individually controlled ions suitable for two-dimensional quantum simulations.
Arrays of individually controlled ions suitable for two-dimensional quantum simulations.
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DOI：
10.1038/ncomms11839
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发表时间：
2016-06-13
影响因子：
16.6
通讯作者：
Schaetz T
中科院分区：
文献类型：
--
作者：
Mielenz M;Kalis H;Wittemer M;Hakelberg F;Warring U;Schmied R;Blain M;Maunz P;Moehring DL;Leibfried D;Schaetz T
一个精确控制的量子系统可能会揭示对另一个不太容易接近的感兴趣系统的基本理解。通用量子计算机目前还遥不可及，但模拟量子模拟器可以使量子模型的相关可观测量，相互作用和状态变得可访问，从而可以洞察复杂的动力学。已经提出了几个平台，并进行了原理验证实验。在这里，我们操作的三个被困离子在单独控制的谐波威尔斯形成等边三角形的边长为40和80 μm的二维阵列。在我们的方法，这是可扩展到任意的二维晶格，我们展示了单独控制的电子和运动的自由度，准备一个基准的初始状态与离子运动接近基态，以及实验序列内的离子之间的耦合调谐。我们的工作为任意设计的二维系统的量子模拟器铺平了道路。 量子模拟器可以提供对复杂动力学的洞察，但以可扩展的方式实现它们仍然是一个技术挑战。在这里，作者演示了捕获在单独控制的威尔斯中的三个离子的二维阵列如何形成一个可扩展的量子模拟平台。
A precisely controlled quantum system may reveal a fundamental understanding of another, less accessible system of interest. A universal quantum computer is currently out of reach, but an analogue quantum simulator that makes relevant observables, interactions and states of a quantum model accessible could permit insight into complex dynamics. Several platforms have been suggested and proof-of-principle experiments have been conducted. Here, we operate two-dimensional arrays of three trapped ions in individually controlled harmonic wells forming equilateral triangles with side lengths 40 and 80 μm. In our approach, which is scalable to arbitrary two-dimensional lattices, we demonstrate individual control of the electronic and motional degrees of freedom, preparation of a fiducial initial state with ion motion close to the ground state, as well as a tuning of couplings between ions within experimental sequences. Our work paves the way towards a quantum simulator of two-dimensional systems designed at will. Analogue quantum simulators could provide insights into complex dynamics, but realizing them in a scalable way remains a technological challenge. Here, the authors demonstrate how two-dimensional arrays of three ions trapped in individually controlled wells could form a scalable platform for quantum simulation.