7 papers
Low Spatial Cost CCZ Magic State Factory
Sungyeon Kook, Yujin Kang, Ilkwon Sohn +1
We propose a design framework for reconstructing gate-based magic state distillation protocols as compact joint-measurement architectures implementable with the surface code. The g…
Designing generalized elegant Bell inequalities in higher dimensions from a Tsirelson bound
Kwangil Bae, Junghee Ryu, Ilkwon Sohn +1
Elegant Bell inequality is well known for its distinctive property, being maximally violated by maximal entanglement, mutually unbiased bases, and symmetric informationally complet…
3D Stacked Surface-Code Architecture for Measurement-Free Fault-Tolerant Quantum Error Correction
GunSik Min, IlKwon Sohn, Jun Heo
Mid-circuit measurements are a major bottleneck for superconducting quantum processors because they are slower and noisier than gates. Measurement-free quantum error correction (mf…
Structural encoding with classical codes for computational-basis bit-flip correction in the early fault-tolerant regime
IlKwon Sohn, Changyeol Lee, Wooyeong Song +2
Achieving reliable performance on early fault-tolerant quantum hardware will depend on protocols that manage noise without incurring prohibitive overhead. We propose a novel framew…
Improving Entanglement Resilience in Quantum Memories with Error-Detection-Based Distillation
Huidan Zheng, Gunsik Min, Ilkwon Sohn +1
The degradation of entanglement in quantum memories due to decoherence is a critical challenge for scalable quantum networks. We present an entanglement distillation protocol based…
Enhanced Extrapolation-Based Quantum Error Mitigation Using Repetitive Structure in Quantum Algorithms
Boseon Kim, Wooyeong Song, Kwangil Bae +2
Quantum error mitigation is a crucial technique for suppressing errors especially in noisy intermediate-scale quantum devices, enabling more reliable quantum computation without th…