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- W4280646646 abstract "Quantum computers promise computational advantages for many important problems across various application domains. Unfortunately, physical quantum devices are highly susceptible to errors that limit us from running most of these quantum applications. Quantum Error Correction (QEC) codes are required to implement Fault-Tolerant Quantum Computers (FTQC) on which computations can be performed without encountering errors. Error decoding is a critical component of quantum error correction and is responsible for transforming a set of qubit measurements generated by the QEC code, called the syndrome, into error locations and error types. For the feasibility of implementation, error decoders must not only identify errors with high accuracy, but also be fast and scalable to a large number of qubits. Unfortunately, most of the prior works on error decoding have focused primarily only on the accuracy and have relied on software implementations that are too slow to be of practical use. Furthermore, these studies only look at designing a single decoder and do not analyze the challenges involved in scaling the storage and bandwidth requirements when performing error correction in large systems with thousands of qubits.In this paper, we present AFS, an accurate, fast, and scalable decoder architecture that is designed to operate in the context of systems with hundreds of logical qubits. We present the hardware implementation of AFS, which is based on the Union Find decoding algorithm and employs a three-stage pipelined design. AFS provides orders of magnitude higher accuracy compared to recent SFQ-based hardware decoders (logical error rate of 6×10<sup>−10</sup> for physical error rate of 10<sup>−3</sup>) and low decoding latency (42ns on average), while being robust to measurement errors introduced while extracting syndromes during the QEC cycles. We also reduce the amount of decoding hardware required to perform QEC simultaneously on all the logical qubits by co-designing the micro-architecture across multiple decoding units. Our proposed Conjoined-Decoder Architecture (CDA) reduces the storage overhead by 70% (10MB to 2.8MB). Finally, we reduce the bandwidth overheads required to transmit syndromes from the qubits to the decoders by exploiting the sparsity in the syndromes and compressing the data. Our proposed Syndrome Compression reduces the bandwidth requirement by 30x, on an average." @default.
- W4280646646 created "2022-05-22" @default.
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- W4280646646 date "2022-04-01" @default.
- W4280646646 modified "2023-09-27" @default.
- W4280646646 title "AFS: Accurate, Fast, and Scalable Error-Decoding for Fault-Tolerant Quantum Computers" @default.
- W4280646646 cites W1520004449 @default.
- W4280646646 cites W1675244148 @default.
- W4280646646 cites W1695111371 @default.
- W4280646646 cites W1710401991 @default.
- W4280646646 cites W1975548669 @default.
- W4280646646 cites W1984021697 @default.
- W4280646646 cites W1988854612 @default.
- W4280646646 cites W1991086270 @default.
- W4280646646 cites W1995611441 @default.
- W4280646646 cites W1995703916 @default.
- W4280646646 cites W2013754283 @default.
- W4280646646 cites W2030867075 @default.
- W4280646646 cites W2040792108 @default.
- W4280646646 cites W2041139565 @default.
- W4280646646 cites W2046753312 @default.
- W4280646646 cites W2049471987 @default.
- W4280646646 cites W2056281570 @default.
- W4280646646 cites W2066690307 @default.
- W4280646646 cites W2070633801 @default.
- W4280646646 cites W2071636337 @default.
- W4280646646 cites W2075431083 @default.
- W4280646646 cites W2082820211 @default.
- W4280646646 cites W2102532141 @default.
- W4280646646 cites W2135273380 @default.
- W4280646646 cites W2137147061 @default.
- W4280646646 cites W2147590609 @default.
- W4280646646 cites W2150802170 @default.
- W4280646646 cites W2167110831 @default.
- W4280646646 cites W2167927798 @default.
- W4280646646 cites W2257937122 @default.
- W4280646646 cites W2349487082 @default.
- W4280646646 cites W2533940598 @default.
- W4280646646 cites W2582390145 @default.
- W4280646646 cites W2611652092 @default.
- W4280646646 cites W2618159897 @default.
- W4280646646 cites W2620286290 @default.
- W4280646646 cites W2750849968 @default.
- W4280646646 cites W2755920271 @default.
- W4280646646 cites W2766390815 @default.
- W4280646646 cites W2771667524 @default.
- W4280646646 cites W2787955889 @default.
- W4280646646 cites W2796204221 @default.
- W4280646646 cites W2805982655 @default.
- W4280646646 cites W2889938786 @default.
- W4280646646 cites W2894247456 @default.
- W4280646646 cites W2901383498 @default.
- W4280646646 cites W2903328350 @default.
- W4280646646 cites W2913384061 @default.
- W4280646646 cites W2913992572 @default.
- W4280646646 cites W2930242962 @default.
- W4280646646 cites W2950073260 @default.
- W4280646646 cites W2963208130 @default.
- W4280646646 cites W2979840408 @default.
- W4280646646 cites W2980100927 @default.
- W4280646646 cites W2980123253 @default.
- W4280646646 cites W3000698183 @default.
- W4280646646 cites W3005907390 @default.
- W4280646646 cites W3006565975 @default.
- W4280646646 cites W3011688936 @default.
- W4280646646 cites W3015955120 @default.
- W4280646646 cites W3029684012 @default.
- W4280646646 cites W3035175167 @default.
- W4280646646 cites W3042739568 @default.
- W4280646646 cites W3098546081 @default.
- W4280646646 cites W3099189920 @default.
- W4280646646 cites W3099658160 @default.
- W4280646646 cites W3099762258 @default.
- W4280646646 cites W3100736866 @default.
- W4280646646 cites W3102159806 @default.
- W4280646646 cites W3103236498 @default.
- W4280646646 cites W3103692286 @default.
- W4280646646 cites W3103860344 @default.
- W4280646646 cites W3104207421 @default.
- W4280646646 cites W3105599170 @default.
- W4280646646 cites W3105613664 @default.
- W4280646646 cites W3105850352 @default.
- W4280646646 cites W3106097556 @default.
- W4280646646 cites W3154524778 @default.
- W4280646646 cites W3181660950 @default.
- W4280646646 cites W3201625033 @default.
- W4280646646 cites W3205601995 @default.
- W4280646646 cites W3206420287 @default.
- W4280646646 cites W3206686065 @default.
- W4280646646 cites W3211604468 @default.
- W4280646646 doi "https://doi.org/10.1109/hpca53966.2022.00027" @default.
- W4280646646 hasPublicationYear "2022" @default.
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