Fluctuations of Energy-Relaxation Times in Superconducting Qubits.
Phys Rev Lett
; 121(9): 090502, 2018 Aug 31.
Article
en En
| MEDLINE
| ID: mdl-30230854
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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MEDLINE
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En
Revista:
Phys Rev Lett
Año:
2018
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Article
País de afiliación:
Estados Unidos