2026-04-15T01:07:14Z https://ipsj.ixsq.nii.ac.jp/oai

oai:ipsj.ixsq.nii.ac.jp:00218765 2025-01-19T15:02:36Z 1164:10193:10905:10966

Leveraging hardware-control imperfections for error mitigation via generalized quantum subspace Leveraging hardware-control imperfections for error mitigation via generalized quantum subspace Yasuhiro, Ohkura Suguru, Endo Nobuyuki, Yoshioka Yasuhiro, Ohkura Suguru, Endo Nobuyuki, Yoshioka In the era of noisy intermediate-scale quantum (NISQ) computing, it is vital to mitigate the effect of quantum noise in order to achieve meaningful computation. In the previous study, the fault-subspace error mitigation as a subclass of the generalized quantum subspace expansion method was introduced as a noise agnostic quantum error mitigation technique. It effectively constructs an error-mitigated quantum state by employing multiple copies of the quantum state, each of which has a different level of quantum noise as an extended subspace; it thus allows for efficient suppression of stochastic, coherent, and algorithmic errors. In this work, we further explore the potential of the GSE-based error mitigation techniques to leverage imperfection in hardware control, instead of straightforwardly trying to reduce their intensity. We demonstrate the validity of our proposals via numerical experiments that employ the noise profiles reported in IBM 's quantum devices. In the era of noisy intermediate-scale quantum (NISQ) computing, it is vital to mitigate the effect of quantum noise in order to achieve meaningful computation. In the previous study, the fault-subspace error mitigation as a subclass of the generalized quantum subspace expansion method was introduced as a noise agnostic quantum error mitigation technique. It effectively constructs an error-mitigated quantum state by employing multiple copies of the quantum state, each of which has a different level of quantum noise as an extended subspace; it thus allows for efficient suppression of stochastic, coherent, and algorithmic errors. In this work, we further explore the potential of the GSE-based error mitigation techniques to leverage imperfection in hardware control, instead of straightforwardly trying to reduce their intensity. We demonstrate the validity of our proposals via numerical experiments that employ the noise profiles reported in IBM 's quantum devices. 情報処理学会 2022-06-30 eng technical report https://ipsj.ixsq.nii.ac.jp/records/218765 2435-6492 AA12894105 量子ソフトウェア（QS） 2022-QS-6 6 1 6 https://ipsj.ixsq.nii.ac.jp/record/218765/files/IPSJ-QS22006006.pdf application/pdf 914.9 kB 2024-06-30