Engineered selection rules for tunable coupling in a superconducting quantum circuit

K. Harrabi*, F. Yoshihara, A. O. Niskanen, Y. Nakamura, J. S. Tsai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

27 Scopus citations


Engineering selection rules of transitions is a useful strategy for coupling and decoupling qubits in superconducting quantum circuits. Following this approach, we implement a tunable coupling scheme between two flux qubits. The qubits are coupled parametrically under microwave driving via the nonlinear inductance of a third qubit. The measured on-state coupling as well as the off-state residual coupling depends on the coupler bias and agrees quantitatively with a calculation of transition matrix elements of a three-qubit Hamiltonian.

Original languageEnglish
Article number020507
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number2
StatePublished - 5 Jan 2009
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


Dive into the research topics of 'Engineered selection rules for tunable coupling in a superconducting quantum circuit'. Together they form a unique fingerprint.

Cite this