Interaction graph engineering in trapped-ion quantum simulators with global drives
Interaction graph engineering in trapped-ion quantum simulators with global drives
复制标题
具有全局驱动器的俘获离子量子模拟器中的交互图工程
DOI：
10.1088/1367-2630/ad264d
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发表时间：
2024
影响因子：
3.3
通讯作者：
Richerme, Philip
中科院分区：
文献类型：
--
作者：
Kyprianidis, Antonis;Rasmusson, A. J.;Richerme, Philip
捕获离子量子模拟器已经证明了使用全局寻址纠缠操作来研究相互作用的自旋-晶格系统的物理学已经有很长的历史了。然而，尽管到目前为止有大量的研究，但大多数都局限于研究同一自旋相互作用模型的变体，即耦合中具有幂规律衰变的伊辛模型。在这里，我们证明了更广泛的有效的自旋-自旋相互作用类可以完全使用全局驱动场来实现。具体地说，我们发现，通过将驱动场的耦合调整到离子晶体的每个振动模式，这些新的相互作用图可以以完美或接近完美的理论保真度实现。给出了离子晶体振动模和可及相互作用图之间的关系，我们展示了可及相互作用图集如何通过塑造包含特定非谐项的俘获势来进一步扩展。最后，我们推导了一个严格的测试，以确定仅使用全局驱动场是否可以访问期望的交互图。这些工具拓宽了囚禁离子量子模拟器的范围，以便它们可以更容易地解决材料科学和量子化学中的公开问题。
Trapped-ion quantum simulators have demonstrated a long history of studying the physics of interacting spin-lattice systems using globally addressed entangling operations. Yet despite the multitude of studies so far, most have been limited to studying variants of the same spin interaction model, namely an Ising model with power-law decay in the couplings. Here, we demonstrate that much broader classes of effective spin–spin interactions are achievable using exclusively global driving fields. Specifically, we find that these new categories of interaction graphs become achievable with perfect or near-perfect theoretical fidelity by tailoring the coupling of the driving fields to each vibrational mode of the ion crystal. Given the relation between the ion crystal vibrational modes and the accessible interaction graphs, we show how the accessible interaction graph set can be further expanded by shaping the trapping potential to include specific anharmonic terms. Finally, we derive a rigorous test to determine whether a desired interaction graph is accessible using only globally driven fields. These tools broaden the reach of trapped-ion quantum simulators so that they may more easily address open questions in materials science and quantum chemistry.
DOI：
10.6028/jres.107.023
发表时间：
2002-05
影响因子：
1.5
作者：
Quinn GD;Patel PJ;Lloyd I
通讯作者：
Lloyd I