Multi-level quantum noise spectroscopy

HIGHLIGHTS

• who: Youngkyu Sung from the Research LaboratoryUniversity of have published the research work: Multi-level quantum noise spectroscopy, in the Journal: NATURE COMMUNICATIONS NATURE COMMUNICATIONS
• what: The authors develop a multi-level spin-locking QNS protocol and experimentally validate it using a flux-tunable transmon qubit and accounting for five energy levels. The authors demonstrate an accurate spectral reconstruction of engineered flux noise over a frequency range 50-300 MHz, overcoming the spectral limitations imposed by the sensor`s relatively weak anharmonicity of ~200 MHz. The authors focus on two environmental noise channels that couple . . .
  

   

  

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