Interband transitions and interference effects in superconducting qubits

Antti Paila, Jani Tuorila, Mika Sillanpää, David Gunnarsson, Jayanta Sarkar, Yuriy Makhlin, Erkki Thuneberg, Pertti Hakonen

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


We investigate phase-sensitive interference effects in a periodically sin(2π f rf t)-driven, artificial two-state system connected to a microwave resonator at f LC 800 MHz. We observe two kinds of multiphoton transitions in the two-state system, accompanied by: (1) Several quanta from the drive at f rf and (2) one quantum at f rf and several at f LC. The former are described using phase-sensitive Landau-Zener transitions, while the latter are discussed in terms of vibronic transitions in diatomic molecules. Interference effects in the vibronic transitions governed by Franck-Condon coefficients are also considered.

Original languageEnglish
Pages (from-to)245-259
Number of pages15
JournalQuantum Information Processing
Issue number2-3
Publication statusPublished - Jun 2009
Externally publishedYes


  • Aharonov-Anandan phase
  • Franck-Condon physics
  • Landau-Zener tunneling
  • Multiphoton transitions
  • Superconducting qubits

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Statistical and Nonlinear Physics
  • Theoretical Computer Science
  • Signal Processing
  • Modeling and Simulation
  • Electrical and Electronic Engineering


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