Experimental realization of a multiqubit quantum memory in a 218-ion chain

Yao, Ruixiao; Lian, W. -Q.; Wu, Yukai; Wang, G. -X.; Li, B. -W.; Mei, Quanxin; Qi, Ben; Yao, Liqiang; Zhou, Z.-C.; He, Longfei; Duan, Luming

doi:10.1103/physreva.106.062617

Cited by 4 publications

(1 citation statement)

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“…受限于离子阱所能提供的最大径向约束电场强度, 为了将更多的离子维持在一维构型, 需要降低轴向的约束电场, 而这将使离子的轴向运动更易受到环境电磁噪声的影响, 最终限制所能稳定约束的离子数 [11] . 目前, 室温离子阱系统通常只能稳定约束数十个离子的一维阵列, 而进一步降低环境温度、提高系统真空度的低温离子阱系统, 通常也只能稳定约束100 -200个离子的一维阵列 [12,13] .…”

Section: 为了获得可独立操控的多个量子比特主流的unclassified

Research progress of ion trap quantum computing

Wu,

Duan

2023

Acta Phys. Sin.

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Ion trap is one of the leading physical platforms to implement quantum computation. Currently, high-fidelity elementary quantum operations above the fault-tolerant threshold, including state preparation, measurement and universal gates, have been demonstrated for tens of ionic qubits. One important future research direction is to further enlarge the qubit number to the scale required for solving practical problems while maintaining the high performance of individual qubits. This paper introduces the current mainstream schemes for scalable ion trap quantum computation like quantum charge-coupled device (QCCD) and ion-photon quantum network, and describes the main limiting factors in current research. Then we further explore new schemes to scale up the qubit number like two-dimensional ion crystals and dual-type qubit, and discuss the future research directions.

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Section: 为了获得可独立操控的多个量子比特主流的unclassified