| Literature DB >> 30230854 |
P V Klimov1, J Kelly1, Z Chen1, M Neeley1, A Megrant1, B Burkett1, R Barends1, K Arya1, B Chiaro2, Yu Chen1, A Dunsworth2, A Fowler1, B Foxen2, C Gidney1, M Giustina1, R Graff1, T Huang1, E Jeffrey1, Erik Lucero1, J Y Mutus1, O Naaman1, C Neill1, C Quintana1, P Roushan1, Daniel Sank1, A Vainsencher1, J Wenner2, T C White1, S Boixo3, R Babbush3, V N Smelyanskiy3, H Neven3, John M Martinis1.
Abstract
Superconducting qubits are an attractive platform for quantum computing since they have demonstrated high-fidelity quantum gates and extensibility to modest system sizes. Nonetheless, an outstanding challenge is stabilizing their energy-relaxation times, which can fluctuate unpredictably in frequency and time. Here, we use qubits as spectral and temporal probes of individual two-level-system defects to provide direct evidence that they are responsible for the largest fluctuations. This research lays the foundation for stabilizing qubit performance through calibration, design, and fabrication.Year: 2018 PMID： 30230854 DOI： 10.1103/PhysRevLett.121.090502
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161