Any-To-Any Connected Cavity-Mediated Architecture for Quantum Computing with Trapped Ions or Rydberg Arrays
Any-To-Any Connected Cavity-Mediated Architecture for Quantum Computing with Trapped Ions or Rydberg Arrays
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DOI：
10.1103/prxquantum.3.010344
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发表时间：
2021-09
期刊：
影响因子：
9.7
通讯作者：
Joshua Ramette;Josiah Sinclair;Z. Vendeiro;Alyssa Rudelis;M. Cetina;Vladan Vuleti'c
中科院分区：
文献类型：
--
作者：
Joshua Ramette;Josiah Sinclair;Z. Vendeiro;Alyssa Rudelis;M. Cetina;Vladan Vuleti'c
我们提出了一种硬件结构和协议，用于连接包含在一个光腔内的多个本地量子处理器。该方案兼容囚禁离子或里德堡阵列，通过腔内单光子传输分配纠缠，实现任意两个量子比特之间的隐形传态门。预告使高保真的纠缠成为可能，即使是中等质量的腔也是如此。对于由囚禁离子组成的线性链处理器，具有真实参数的单个腔每隔几个$\mU$S就成功地传输光子，使得20个总共包含500个量子比特的离子链在200$\mU$S中实现任意到任意的纠缠，其保真度和速率都仅受局域操作和离子读出的限制。对于由里德堡原子组成的处理器，我们的方法完全连接了数千个中性原子的大阵列。我们的架构提供的连接性可扩展到使用多个重叠腔的数万个量子比特，扩展了NISQ时代算法和哈密顿模拟的能力，并实现了更强大的高维纠错方案。
We propose a hardware architecture and protocol for connecting many local quantum processors contained within an optical cavity. The scheme is compatible with trapped ions or Rydberg arrays, and realizes teleported gates between any two qubits by distributing entanglement via single-photon transfers through a cavity. Heralding enables high-fidelity entanglement even for a cavity of moderate quality. For processors composed of trapped ions in a linear chain, a single cavity with realistic parameters successfully transfers photons every few $\mu$s, enabling the any-to-any entanglement of 20 ion chains containing a total of 500 qubits in 200 $\mu$s, with both fidelities and rates limited only by local operations and ion readout. For processors composed of Rydberg atoms, our method fully connects a large array of thousands of neutral atoms. The connectivity afforded by our architecture is extendable to tens of thousands of qubits using multiple overlapping cavities, expanding capabilities for NISQ era algorithms and Hamiltonian simulations, as well as enabling more robust high-dimensional error correcting schemes.