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arXiv 2203.14062quant-ph
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离子阱微芯片模块之间的高保真量子物质链接

A high-fidelity quantum matter-link between ion-trap microchip modules

M. Akhtar, F. Bonus, F. R. Lebrun-Gallagher, N. I. Johnson, M. Siegele-Brown, S. Hong, S. J. Hile, S. A. Kulmiya, S. Weidt, W. K. Hensinger

摘要:

系统可扩展性是大规模量子计算机(QC)的基础,并且正在各种硬件平台上追求。对于基于捕获离子的QC,诸如量子电荷耦合器件(QCCD)的架构被用于缩放单个器件上的量子位的数量。然而,可以托管在单个量子计算模块上的离子数量受到所使用的芯片尺寸的限制。因此,模块化方法至关重要,需要各个模块之间的量子连接。在这里,我们提出了一个量子物质链接的演示,其中离子量子比特在相邻的QC模块之间传输。相邻模块之间的离子传输以2424 $\,$ s $^{-1}$的速率实现,并且在低于$7\times10^{-8}$的传输期间具有与离子损失相关联的不保真度。此外,我们表明,链接不会显著影响量子位的相位相干性。量子物质链构成了QCCD器件互连的一种实用机制。我们的工作将促进实现模块化的量子计算机能够容错实用规模的量子计算。

英文摘要:

System scalability is fundamental for large-scale quantum computers (QCs) and is being pursued over a variety of hardware platforms. For QCs based on trapped ions, architectures such as the quantum charge-coupled device (QCCD) are used to scale the number of qubits on a single device. However, the number of ions that can be hosted on a single quantum computing module is limited by the size of the chip being used. Therefore, a modular approach is of critical importance and requires quantum connections between individual modules. Here, we present the demonstration of a quantum matter-link in which ion qubits are transferred between adjacent QC modules. Ion transport between adjacent modules is realised at a rate of 2424$\,$s$^{-1}$ and with an infidelity associated with ion loss during transport below $7\times10^{-8}$. Furthermore, we show that the link does not measurably impact the phase coherence of the qubit. The quantum matter-link constitutes a practical mechanism for the interconnection of QCCD devices. Our work will facilitate the implementation of modular QCs capable of fault-tolerant utility-scale quantum computation.

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。

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