@article {27827, title = {Hybrid quantum-classical algorithms and quantum error mitigation}, journal = {Journal of the Physical Society of Japan}, volume = {90}, year = {2021}, pages = {032001}, publisher = {The Physical Society of Japan}, isbn = {0031-9015}, author = {Endo, Suguru and Cai, Zhenyu and Benjamin, Simon C and Yuan, Xiao} }