Fault-tolerant Technology for Quantum Information Processing and Its Implementation Methods
Yuuki Tokunaga, Yasunari Suzuki, Suguru Endo, Rui Asaoka · NTT technical review · 2021
To use quantum information processing in a wide range of applications, fault-tolerant processing is essential to cope with noise.Fault-tolerant quantum computing using quantum error-correcting codes is scalable, but the overhead of number of qubits or processes is large, so improving efficiency is an important research theme.Quantum error mitigation incurs computational cost, but it does not require the overhead of number of qubits, so it is expected to be used for near-future applications.In this article, we introduce our research activities on these topics as well as our studies toward the implementation of quantum information processing.