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Fluctuations of Energy-Relaxation Times in Superconducting Qubits.
Klimov, P V; Kelly, J; Chen, Z; Neeley, M; Megrant, A; Burkett, B; Barends, R; Arya, K; Chiaro, B; Chen, Yu; Dunsworth, A; Fowler, A; Foxen, B; Gidney, C; Giustina, M; Graff, R; Huang, T; Jeffrey, E; Lucero, Erik; Mutus, J Y; Naaman, O; Neill, C; Quintana, C; Roushan, P; Sank, Daniel; Vainsencher, A; Wenner, J; White, T C; Boixo, S; Babbush, R; Smelyanskiy, V N; Neven, H; Martinis, John M.
Afiliação
  • Klimov PV; Google, Santa Barbara, California 93117, USA.
  • Kelly J; Google, Santa Barbara, California 93117, USA.
  • Chen Z; Google, Santa Barbara, California 93117, USA.
  • Neeley M; Google, Santa Barbara, California 93117, USA.
  • Megrant A; Google, Santa Barbara, California 93117, USA.
  • Burkett B; Google, Santa Barbara, California 93117, USA.
  • Barends R; Google, Santa Barbara, California 93117, USA.
  • Arya K; Google, Santa Barbara, California 93117, USA.
  • Chiaro B; University of California, Santa Barbara, California 93106, USA.
  • Chen Y; Google, Santa Barbara, California 93117, USA.
  • Dunsworth A; University of California, Santa Barbara, California 93106, USA.
  • Fowler A; Google, Santa Barbara, California 93117, USA.
  • Foxen B; University of California, Santa Barbara, California 93106, USA.
  • Gidney C; Google, Santa Barbara, California 93117, USA.
  • Giustina M; Google, Santa Barbara, California 93117, USA.
  • Graff R; Google, Santa Barbara, California 93117, USA.
  • Huang T; Google, Santa Barbara, California 93117, USA.
  • Jeffrey E; Google, Santa Barbara, California 93117, USA.
  • Lucero E; Google, Santa Barbara, California 93117, USA.
  • Mutus JY; Google, Santa Barbara, California 93117, USA.
  • Naaman O; Google, Santa Barbara, California 93117, USA.
  • Neill C; Google, Santa Barbara, California 93117, USA.
  • Quintana C; Google, Santa Barbara, California 93117, USA.
  • Roushan P; Google, Santa Barbara, California 93117, USA.
  • Sank D; Google, Santa Barbara, California 93117, USA.
  • Vainsencher A; Google, Santa Barbara, California 93117, USA.
  • Wenner J; University of California, Santa Barbara, California 93106, USA.
  • White TC; Google, Santa Barbara, California 93117, USA.
  • Boixo S; Google, Los Angeles, California 90291, USA.
  • Babbush R; Google, Los Angeles, California 90291, USA.
  • Smelyanskiy VN; Google, Los Angeles, California 90291, USA.
  • Neven H; Google, Los Angeles, California 90291, USA.
  • Martinis JM; Google, Santa Barbara, California 93117, USA.
Phys Rev Lett ; 121(9): 090502, 2018 Aug 31.
Article em En | MEDLINE | ID: mdl-30230854
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.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2018 Tipo de documento: Article
Texto completo
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2018 Tipo de documento: Article