Temperature square dependence of the low frequency charge noise in the Josephson junction qubits.

To verify the hypothesis about the common origin of the low-frequency 1/f noise and the quantum f noise recently measured in the Josephson charge qubits, we study the temperature dependence of the 1/f noise and decay of coherent oscillations. The T2 dependence of the 1/f noise is experimentally demonstrated, which supports the hypothesis. We also show that dephasing in the Josephson charge qubits off the electrostatic energy degeneracy point is consistently explained by the same low-frequency 1/f noise that is observed in the transport measurements.

• Publication year

  2006

• Venue

  Physical Review Letters

• Publication date

  2006-04-05

• Fields of study

  Medicine, Physics

• Identifiers
  DOI 10.1103/PhysRevLett.96.137001arXiv cond-mat/0604116PMID 16712022
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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