论文标题
用被困的离子动态解耦量子模拟
Engineering dynamically decoupled quantum simulations with trapped ions
论文作者
论文摘要
外部驱动可以通过平均噪声源来提高量子多体系统的相干性。它还可以用来通过Floquet Hamiltonian工程实现在静态极限中无法访问的模型。结合这些工具的全部可能性仍未得到探索。我们开发了脉冲序列所需的要求，以使外部磁场将量子多体系统解脱而不改变预期的动力学。在离子陷阱平台实验中，我们表明它可以为现实世界应用中的连贯性提供很大的改善。最后，我们设计了Haldane-Shastry模型的近似量子模拟，这是一种可解决的范式范式，用于长期相互作用的旋转。我们的结果扩展并统一量子模拟工具箱。
An external drive can improve the coherence of a quantum many-body system by averaging out noise sources. It can also be used to realize models that are inaccessible in the static limit, through Floquet Hamiltonian engineering. The full possibilities for combining these tools remain unexplored. We develop the requirements needed for a pulse sequence to decouple a quantum many-body system from an external field without altering the intended dynamics. Demonstrating this technique experimentally in an ion-trap platform, we show that it can provide a large improvement to coherence in real-world applications. Finally, we engineer an approximate quantum simulation of the Haldane-Shastry model, an exactly solvable paradigm for long-range interacting spins. Our results expand and unify the quantum simulation toolbox.
