一句话：提出混合离子阱量子架构 iSwitch，按需在裸量子比特与 QEC 逻辑量子比特间切换，降低资源开销。
针对早期容错量子计算中完整逻辑编码开销大的问题，论文提出 iSwitch：一种面向离子阱量子计算机的混合架构。它利用高保真单比特门与离子穿梭实现的高效逻辑 CNOT，在单比特操作中使用裸量子比特，仅在两比特门中使用 QEC 编码的逻辑量子比特，从而避免完整逻辑编码、门合成与魔态蒸馏。为支持选择性编码，作者设计了裸量子比特与逻辑量子比特之间的低噪声转换协议、适配二维离子阱布局的混合指令集，以及最小化转换开销并优化调度的编译器。在变分量子算法基准上，iSwitch 达到与传统 QEC 方法相当的保真度，并将量子比特数与操作数减少约 33–50%。
Recent advances in quantum hardware and error correction have paved the way for early fault-tolerant (EFT) quantum computing. We propose iSwitch, a hybrid system architecture for trapped-ion quantum computers (TIQC) that exploits ultra-high-fidelity single-qubit gates and efficient logical CNOTs enabled by ion shuttling. iSwitch employs bare qubits for single-qubit operations and QEC-encoded logical qubits for two-qubit gates, avoiding full logical encoding, gate synthesis, and magic state distillation. To enable this selective encoding, we develop a low-noise conversion protocol between bare and logical qubits, a hybrid instruction set tailored to 2D TIQC layouts, and a compiler that minimizes conversion overhead and optimizes scheduling. Evaluations on variational quantum algorithm benchmarks show that iSwitch achieves comparable fidelity to conventional QEC methods, while reducing qubit and operation counts by roughly 33–50%, offering a practical, resource-efficient path toward EFT quantum computing on trapped-ion platforms.
DOI 原文 · arXiv · PDF（开放获取） · DBLP
@inproceedings{YinFCHKNHCHPH026,
title = {iSwitch: QEC on Demand via In-Situ Encoding of Bare Qubits for Ion Trap Architectures},
author = {Keyi Yin and Xiang Fang and Zhuo Chen and David Hayes and Eneet Kaur and Reza Nejabati and Hartmut Haeffner and Wes Campbell and Eric Hudson and Jens Palsberg and Travis Humble and Yufei Ding},
booktitle = {ASPLOS},
year = {2026},
doi = {10.1145/3779212.3790177}
}