3 papers
quant-ph2026
Do Not Let CNOTs Overwhelm the Decoder: Scheduling Transversal Gates for Fast FTQC
Shota Ikari, Yuga Hirai, Yasunari Suzuki +2
Transversal CNOT (TCNOT) gates can accelerate fault-tolerant quantum computation (FTQC) in the surface code by reducing the number of syndrome extraction rounds required between lo…
quant-ph2026
No More Hooks in the Surface Code: Distance-Preserving Syndrome Extraction for Arbitrary Layouts at Minimum Depth
Yuga Hirai, Shota Ikari, Yosuke Ueno +1
Hook errors are a major challenge in implementing logical operations with the surface code, because they can reduce the fault distance below the code distance. This motivates syndr…
quant-ph2026
A Spacetime Volume Implementation of a Logical S Gate in the Surface Code
Yuga Hirai, Shota Ikari, Yosuke Ueno +1
The logical S gate implemented via twist defect braiding in the surface code is one of the major sources of overhead in fault-tolerant quantum computing, since an S-gate correction…