Driven dynamics and rotary echo of a qubit tunably coupled to a harmonic oscillator

S. Gustavsson*, J. Bylander, F. Yan, P. Forn-Díaz, V. Bolkhovsky, D. Braje, G. Fitch, K. Harrabi, D. Lennon, J. Miloshi, P. Murphy, R. Slattery, S. Spector, B. Turek, T. Weir, P. B. Welander, F. Yoshihara, D. G. Cory, Y. Nakamura, T. P. OrlandoW. D. Oliver

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


We have investigated the driven dynamics of a superconducting flux qubit that is tunably coupled to a microwave resonator. We find that the qubit experiences an oscillating field mediated by off-resonant driving of the resonator, leading to strong modifications of the qubit Rabi frequency. This opens an additional noise channel, and we find that low-frequency noise in the coupling parameter causes a reduction of the coherence time during driven evolution. The noise can be mitigated with the rotary-echo pulse sequence, which, for driven systems, is analogous to the Hahn-echo sequence.

Original languageEnglish
Article number170503
JournalPhysical Review Letters
Issue number17
StatePublished - 27 Apr 2012

ASJC Scopus subject areas

  • Physics and Astronomy (all)


Dive into the research topics of 'Driven dynamics and rotary echo of a qubit tunably coupled to a harmonic oscillator'. Together they form a unique fingerprint.

Cite this