在多体系统中生成对称性保护的长程纠缠
Generating Symmetry-Protected Long-Range Entanglement in Many-Body Systems
AI总结：
本文提出一种基于对称性的脉冲驱动方法，可高效制备多体系统中的最大长程纠缠，并演示了在量子比特阵列上生成任意数量稳定非局域贝尔对及排斥性哈伯德模型中超导η对的可行性。
摘要：
空间上相距遥远的量子比特之间的纠缠或许是分布式量子计算中最反直觉且至关重要的资源。然而，除少数特殊情况外，目前尚无已知的通用程序能够使相互作用的量子多体系统的两个遥远部分实现最大程度纠缠。在此，我们提出一种基于对称性的方法，通过施加若干定时脉冲，将系统驱动至具有最大二分长程纠缠的特定对称扇区。作为具体示例，我们展示了在量子比特阵列上施加一系列简单的在位脉冲，即可高效地产生任意数量的稳定非局域贝尔对，这可在当前多种原子和光子实验平台上实现。更一般地，我们的方法通过利用对称性为新颖态制备开辟了途径。例如，我们展示了该方法能够在排斥性哈伯德模型中产生长期寻求的超导η对。
英文摘要：
Entanglement between spatially distant qubits is perhaps the most counterintuitive and vital resource for distributed quantum computing. However, despite a few special cases, there is no known general procedure to maximally entangle two distant parts of an interacting many-body system. Here we present a symmetry-based approach, whereby one applies several timed pulses to drive a system to a particular symmetry sector with maximal bipartite long-range entanglement. As a concrete example, we demonstrate how a simple sequence of on-site pulses on a qubit array can efficiently produce any given number of stable nonlocal Bell pairs, realizable in several present-day atomic and photonic experimental platforms. More generally, our approach paves a route for novel state preparation by harnessing symmetry. For instance, we show how it enables the creation of long-sought-after superconducting $η$ pairs in a repulsive Hubbard model.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
