Astrea: Accurate quantum error-decoding via practical minimum-weight perfect-matching

S Vittal, P Das, M Qureshi - Proceedings of the 50th Annual International …, 2023 - dl.acm.org
Quantum devices suffer from high error rates, which makes them ineffective for running
practical applications. Quantum computers can be made fault tolerant using Quantum Error …

Better than worst-case decoding for quantum error correction

GS Ravi, JM Baker, A Fayyazi, SF Lin… - Proceedings of the 28th …, 2023 - dl.acm.org
The overheads of classical decoding for quantum error correction in cryogenic quantum
systems grow rapidly with the number of logical qubits and their correction code distance …

A fault-tolerant million qubit-scale distributed quantum computer

J Kim, D Min, J Cho, H Jeong, I Byun, J Choi… - Proceedings of the 29th …, 2024 - dl.acm.org
A million qubit-scale quantum computer is essential to realize the quantum supremacy.
Modern large-scale quantum computers integrate multiple quantum computers located in …

Robuststate: Boosting fidelity of quantum state preparation via noise-aware variational training

H Wang, Y Liu, P Liu, J Gu, Z Li, Z Liang… - arxiv preprint arxiv …, 2023 - arxiv.org
Quantum state preparation, a crucial subroutine in quantum computing, involves generating
a target quantum state from initialized qubits. Arbitrary state preparation algorithms can be …

Eraser: Towards adaptive leakage suppression for fault-tolerant quantum computing

S Vittal, P Das, M Qureshi - Proceedings of the 56th Annual IEEE/ACM …, 2023 - dl.acm.org
Quantum error correction (QEC) codes can tolerate hardware errors by encoding fault-
tolerant logical qubits using redundant physical qubits and detecting errors using parity …

Design and fabrication of low-power single-flux-quantum circuits toward quantum bit control

M Tanaka, Y Kitagawa, T Satoh… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
We report low-power single-flux-quantum (SFQ) circuits fabricated with a lowered critical
current density process and low-voltage design. We selected 250 A/cm to obtain 2–10 μA …

Qisim: Architecting 10+ k qubit qc interfaces toward quantum supremacy

D Min, J Kim, J Choi, I Byun, M Tanaka… - Proceedings of the 50th …, 2023 - dl.acm.org
A 10+ K qubit Quantum-Classical Interface (QCI) is essential to realize the quantum
supremacy. However, it is extremely challenging to architect scalable QCIs due to the …

Managing Classical Processing Requirements for Quantum Error Correction

S Maurya, S Tannu - arxiv preprint arxiv:2406.17995, 2024 - arxiv.org
Quantum Error Correction requires decoders to process syndromes generated by the error-
correction circuits. These decoders must process syndromes faster than they are being …

SuperCore: An Ultra-Fast Superconducting Processor for Cryogenic Applications

J Choi, I Byun, J Hong, D Min, J Kim… - 2024 57th IEEE/ACM …, 2024 - ieeexplore.ieee.org
Superconductor single-flux-quantum (SFQ) logic family has been recognized as a promising
technology for cryogenic applications (eg, quantum computing, astronomy, metrology) …

Synthesis of resource-efficient superconducting circuits with clock-free alternating logic

J Volk, P Papanikolaou, G Zervakis… - Proceedings of the 61st …, 2024 - dl.acm.org
Gate-level clocking, typical in traditional approaches to Single Flux Quantum (SFQ)
technology, makes the effective synthesis of superconducting circuits a significant …