光学晶格中可扩展多体纠缠的功能构件
Functional building blocks for scalable multipartite entanglement in optical lattices
AI总结：
提出基于交叉角自旋依赖超晶格结合量子气体显微镜的新架构，实现局部原子自旋操控，构建并验证了可扩展多体纠缠的功能构件，为可扩展量子计算与模拟提供新平台。
摘要：
光学晶格中的超冷原子具有出色的相干性并可并行操作，是量子计算的有力候选者。为此，超晶格中已实现大量并行纠缠原子对。然而，由于在反射式双色超晶格中缺乏对局部原子自旋的操控，扩展和检测多体纠缠仍是更艰巨的挑战。在此，我们开发了一种基于交叉角自旋依赖超晶格的新架构，用于在中等间距的原子上实现多层量子门，并结合量子气体显微镜进行单原子操控。我们通过将Bell对连接成一维10原子链和二维$2\ imes4$原子 plaquettes，创建并验证了可扩展多体纠缠的功能构件。这为可扩展量子计算和模拟提供了新平台。
英文摘要：
Featuring excellent coherence and operated parallelly, ultracold atoms in optical lattices form a competitive candidate for quantum computation. For this, a massive number of parallel entangled atom pairs have been realized in superlattices. However, the more formidable challenge is to scale-up and detect multipartite entanglement due to the lack of manipulations over local atomic spins in retro-reflected bichromatic superlattices. Here we developed a new architecture based on a cross-angle spin-dependent superlattice for implementing layers of quantum gates over moderately-separated atoms incorporated with a quantum gas microscope for single-atom manipulation. We created and verified functional building blocks for scalable multipartite entanglement by connecting Bell pairs to one-dimensional 10-atom chains and two-dimensional plaquettes of $2\times4$ atoms. This offers a new platform towards scalable quantum computation and simulation.
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