Opportunities and challenges in fault-tolerant quantum computation

D Gottesman - arxiv preprint arxiv:2210.15844, 2022 - arxiv.org
I will give an overview of what I see as some of the most important future directions in the
theory of fault-tolerant quantum computation. In particular, I will give a brief summary of the …

Real-time quantum error correction beyond break-even

VV Sivak, A Eickbusch, B Royer, S Singh, I Tsioutsios… - Nature, 2023 - nature.com
The ambition of harnessing the quantum for computation is at odds with the fundamental
phenomenon of decoherence. The purpose of quantum error correction (QEC) is to …

Suppressing quantum errors by scaling a surface code logical qubit

Nature, 2023 - nature.com
Practical quantum computing will require error rates well below those achievable with
physical qubits. Quantum error correction, offers a path to algorithmically relevant error rates …

Sparse blossom: correcting a million errors per core second with minimum-weight matching

O Higgott, C Gidney - Quantum, 2025 - quantum-journal.org
In this work, we introduce a fast implementation of the minimum-weight perfect matching
(MWPM) decoder, the most widely used decoder for several important families of quantum …

Encoding a magic state with beyond break-even fidelity

RS Gupta, N Sundaresan, T Alexander, CJ Wood… - Nature, 2024 - nature.com
To run large-scale algorithms on a quantum computer, error-correcting codes must be able
to perform a fundamental set of operations, called logic gates, while isolating the encoded …

Advancements in quantum computing—viewpoint: Building adoption and competency in industry

SML Pfaendler, K Konson, F Greinert - Datenbank-spektrum, 2024 - Springer
The narrative around quantum computing is evolving quickly. First reports of quantum
computers able to solve certain scientific problems on-par with the precision of High …

Suppressing quantum circuit errors due to system variability

PD Nation, M Treinish - PRX Quantum, 2023 - APS
We present a quantum circuit optimization technique that takes into account the variability in
error rates that is inherent across present-day noisy quantum computing platforms. This …

Improved decoding of circuit noise and fragile boundaries of tailored surface codes

O Higgott, TC Bohdanowicz, A Kubica, ST Flammia… - Physical Review X, 2023 - APS
Realizing the full potential of quantum computation requires quantum error correction (QEC),
with most recent breakthrough demonstrations of QEC using the surface code. QEC codes …

ARQUIN: architectures for multinode superconducting quantum computers

J Ang, G Carini, Y Chen, I Chuang, M Demarco… - ACM Transactions on …, 2024 - dl.acm.org
Many proposals to scale quantum technology rely on modular or distributed designs
wherein individual quantum processors, called nodes, are linked together to form one large …

All-microwave leakage reduction units for quantum error correction with superconducting transmon qubits

JF Marques, H Ali, BM Varbanov, M Finkel, HM Veen… - Physical review …, 2023 - APS
Minimizing leakage from computational states is a challenge when using many-level
systems like superconducting quantum circuits as qubits. We realize and extend the …