Coherent control of a superconducting qubit with dynamically tunable qubit-cavity coupling

A. J. Hoffman, S. J. Srinivasan, J. M. Gambetta, A. A. Houck

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

We demonstrate coherent control and measurement of a superconducting qubit coupled to a superconducting coplanar waveguide resonator with a dynamically tunable qubit-cavity coupling strength. Rabi oscillations are measured for several coupling strengths showing that the qubit transition can be turned off by a factor of more than 1500. We show how the qubit can still be accessed in the off state via fast flux pulses. We perform pulse delay measurements with synchronized fast flux pulses on the device and observe T1 and T 2 times of 1.6 and 1.9 μs, respectively. This work demonstrates how this qubit can be incorporated into quantum architectures.

Original languageEnglish (US)
Article number184515
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume84
Issue number18
DOIs
StatePublished - Nov 14 2011

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Coherent control of a superconducting qubit with dynamically tunable qubit-cavity coupling'. Together they form a unique fingerprint.

Cite this