论文标题

通过混合数字分析方法对相控制的动力学实现实验性实现

Experimental realization of phase-controlled dynamics with hybrid digital-analog approach

论文作者

Tao, Ziyu, Zhang, Libo, Li, Xiaole, Niu, Jingjing, Luo, Kai, Yi, Kangyuan, Zhou, Yuxuan, Jia, Hao, Liu, Song, Yan, Tongxing, Chen, Yuanzhen, Yu, Dapeng

论文摘要

量子仿真可以以纯数字或模拟方式实施,每种模拟都具有其优缺点。通过利用数字途径的通用性和模拟模拟的效率,混合数字分析方法可以丰富量子模拟的可能性。我们使用独特的混合方法来对超导量子电路中某些多​​级系统中的闭合库相互作用(CCI)产生的相控制动力学进行实验模拟。由于对称约束,此类系统无法托管固有的CCI。然而,通过组装与它们的自然演变相对应的模拟模块和由标准量子逻辑门构建的特殊设计的数字模块,我们可以绕过此类约束并实现这些系统中有效的CCI。基于这种实现,我们展示了各种相关和有趣的现象,包括相处的手性动力学,手性对映体的分离以及基于CCI产生纠缠状态的新机制。

Quantum simulation can be implemented in pure digital or analog ways, each with their pros and cons. By taking advantage of the universality of a digital route and the efficiency of analog simulation, hybrid digital-analog approaches can enrich the possibilities for quantum simulation. We use a unique hybrid approach to experimentally perform a quantum simulation of phase-controlled dynamics resulting from a closed-contour interaction (CCI) within certain multi-level systems in superconducting quantum circuits. Due to symmetry constraints, such systems cannot host an inherent CCI. Nevertheless, by assembling analog modules corresponding to their natural evolutions and specially designed digital modules constructed from standard quantum logic gates, we can bypass such constraints and realize an effective CCI in these systems. Based on this realization, we demonstrate a variety of related and interesting phenomena, including phase-controlled chiral dynamics, separation of chiral enantiomers, and a new mechanism to generate entangled states based on CCI.

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