Emergence and control of complex behaviors in driven systems of interacting qubits with dissipation
Emergence and control of complex behaviors in driven systems of interacting qubits with dissipation
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DOI：
10.1038/s41534-020-00339-1
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发表时间：
2020-10
影响因子：
7.6
通讯作者：
A. Andreev;A. Balanov;T. Fromhold;M. Greenaway;A. Hramov;W. Li;V. Makarov;A. Zagoskin
中科院分区：
文献类型：
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作者：
A. Andreev;A. Balanov;T. Fromhold;M. Greenaway;A. Hramov;W. Li;V. Makarov;A. Zagoskin
在大规模的人工量子相干结构的创建的进展，要求他们的非平衡动力学的调查时，强相互作用，即使在遥远的部分，是非微扰的。在退相干和外部驱动的存在下，分析大系统中的多粒子量子关联是特别热门的话题。尽管如此，动力学的标度行为和相关的涌现现象还没有得到很好的理解。我们研究了几个量子元素（例如，量子比特或里德伯原子）随着元素数量的增加而变化。令人惊讶的是，两个元素的系统表现出混沌行为。对于较大的系统规模，一个高度随机的，远离平衡，hyperchaoticregime出现。它的复杂性与系统的大小成比例，与元素的数量成比例。最后，我们证明了这些混沌动力学可以有效地控制一个周期性的驱动场。我们的研究结果提供的见解表明，一个大的量子系统的行为在其性质不同的动力学制度之间的过渡方面的减少描述的可能性。这些跃迁由相对较少的参数控制，这可能在大型人工量子结构的设计、表征和控制中证明是有用的。
Progress in the creation of large-scale, artificial quantum coherent structures demands the investigation of their nonequilibrium dynamics when strong interactions, even between remote parts, are non-perturbative. Analysis of multiparticle quantum correlations in a large system in the presence of decoherence and external driving is especially topical. Still, the scaling behavior of dynamics and related emergent phenomena are not yet well understood. We investigate how the dynamics of a driven system of several quantum elements (e.g., qubits or Rydberg atoms) changes with increasing number of elements. Surprisingly, a two-element system exhibits chaotic behaviors. For larger system sizes, a highly stochastic, far from equilibrium,hyperchaoticregime emerges. Its complexity systematically scales with the size of the system, proportionally to the number of elements. Finally, we demonstrate that these chaotic dynamics can be efficiently controlled by a periodic driving field. The insights provided by our results indicate the possibility of a reduced description for the behavior of a large quantum system in terms of the transitions between its qualitatively different dynamical regimes. These transitions are controlled by a relatively small number of parameters, which may prove useful in the design, characterization, and control of large artificial quantum structures.