Bias-preserving computation with the bit-flip code
Shoichiro Tsutsui, Keita Kanno · Physical Review Research · 2024
We explore the feasibility of fault-tolerant quantum computation using the bit-flip repetition code in a biased noise channel where only the bit-flip error can occur. While several logic gates can potentially produce phase-flip errors even in such a channel, we propose bias-preserving implementation of S , H , controlled- Z (CZ), and R z gates. We demonstrate that our scheme improves the computational precision in several tasks such as the time evolution of quantum systems and variational quantum eigensolver. Published by the American Physical Society 2024