Abstract
We present measurements of single-qubit gate errors for a superconducting qubit. Results from quantum process tomography and randomized benchmarking are compared with gate errors obtained from a double pulse experiment. Randomized benchmarking reveals a minimum average gate error of and a simple exponential dependence of fidelity on the number of gates. It shows that the limits on gate fidelity are primarily imposed by qubit decoherence, in agreement with theory.
- Received 26 November 2008
- Corrected 11 March 2009
DOI:https://doi.org/10.1103/PhysRevLett.102.090502
©2009 American Physical Society
Corrections
11 March 2009