https://ja.wikipedia.org/wiki/%E3%82%B3%E3%83%B3%E3%83 %94%E3%83%A5%E3%83%BC%E3%82%BF 31: Quantum supremacy using a programmable superconducting processor Arute, F., Arya, K., Babbush, R. et al. Quantum supremacy using a programmable superconducting processor. Nature 574, 505–510 (2019) https://www.nature.com/articles/s41586-019-1666-5 33: P.S.P.T. - http://www23.atwiki.jp/pspt/pages/203.html