Randomized benchmarking and process tomography for gate errors in a solid-state qubit
Journal article, 2009
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 1.1±0.3% 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.
Author
J.M. Chow
J.M. Gambetta
Lars Tornberg
Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics
Jens Koch
Lev S. Bishop
A. A. Houck
B. R. Johnson
L. Frunzio
S.M. Girvin
RJ Schoelkopf
Physical Review Letters
0031-9007 (ISSN) 1079-7114 (eISSN)
Vol. 102 9Subject Categories
Condensed Matter Physics
DOI
10.1103/PhysRevLett.102.090502