Petar Jurcevic, Ali Javadi-Abhari, et al.
Quantum Science and Technology
We have investigated instability of a superconducting quantum computer by continuously monitoring the qubit output. We found that qubits exhibit a step-like change in the error rates. This change is repeatedly observed, and each step persists for several minutes. By analyzing the correlation between the increased errors and anomalous variance of the output, we demonstrate quantum error mitigation based on post-selection. We have reduced the errors from 5.4% to 1.6% in a Bell state measurement and from 17.5% to 12.0% in a quantum volume circuit. Numerical analysis on the proposed method was also conducted.
Petar Jurcevic, Ali Javadi-Abhari, et al.
Quantum Science and Technology
Bryce Fuller, Charles Hadfield, et al.
arXiv
Tatsuya Ishihara, Toshinari Itoko, et al.
JCDL 2012
Bryce Fuller, Charles Hadfield, et al.
IEEE TQE