Quantum behavior of a flux qubit coupled to a resonator

A. N. Omelyanchouk, S. N. Shevchenko, Ya S. Greenberg, O. Astafiev, E. Il'ichev

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)


A detailed theory for a system of a superconducting qubit coupled to a transmission line resonator is presented. We describe the system by solving analytically and numerically the master equation for the density matrix, which includes a dissipative Lindblad term. We calculate the transmission coefficient, which provides a way to probe the dressed states of a qubit. The theoretical results are related to experiments with intermediate coupling between a qubit and a resonator when the coupling energy is of the same order as the qubit relaxation rate.

Original languageEnglish
Article number007010LTP
Pages (from-to)893-901
Number of pages9
JournalLow Temperature Physics
Issue number10
Publication statusPublished - 2010
Externally publishedYes


  • Resonator
  • Superconducting qubit
  • Transmission line


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