2 papers
quant-ph2026
Homological origin of transversal implementability of logical diagonal gates in quantum CSS codes
Junichi Haruna
Transversal Pauli rotations provide a natural route to fault-tolerant logical diagonal gates in quantum CSS codes, but their capability is inherently constrained. We develop a…
hep-th2025
Note on Logical Gates by Gauge Field Formalism of Quantum Error Correction
Junichi Haruna
The gauge field formalism, or operator-valued cochain formalism, has recently emerged as a powerful framework for describing quantum Calderbank-Shor-Steane (CSS) codes. In this wor…