Scalable graph states are essential for measurement-based quantum computation and many entanglement-assisted applications in quantum technologies. Generation of these multipartite entangled states requires a controllable and efficient quantum device with delicate design of generation protocol. Here we propose to prepare high-fidelity and scalable graph states in one and two dimensions, which can be tailored in an atom-nanophotonic cavity via state carving technique. We propose a systematic protocol to carve out unwanted state components, which facilitates scalable graph states generations via adiabatic transport of a definite number of atoms in optical tweezers. An analysis of state fidelity is also presented, and the state preparation probability can be optimized via multiqubit state carvings and sequential single-photon probes. Our results showcase the capability of an atom-nanophotonic interface for creating graph states and pave the way toward novel problem-specific applications using scalable high-dimensional graph states with stationary qubits.

中文翻译：

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在原子-纳米光子界面中生成可扩展的图状态

可扩展的图状态对于基于测量的量子计算和量子技术中的许多纠缠辅助应用至关重要。这些多部分纠缠态的生成需要一个可控且高效的量子设备，并具有精心设计的生成协议。在这里，我们建议在一维和二维中准备高保真和可扩展的图状态，可以通过状态雕刻技术在原子纳米光子腔中进行定制。我们提出了一种系统协议来去除不需要的状态组件，这有助于通过光镊中一定数量的原子的绝热传输来生成可扩展的图状态。还提出了状态保真度的分析，并且可以通过多量子位状态雕刻和顺序单光子探针来优化状态准备概率。我们的结果展示了原子-纳米光子接口创建图状态的能力，并为使用具有固定量子位的可扩展高维图状态的新颖的特定问题应用铺平了道路。