State preservation by repetitive error detection in a superconducting quantum circuit

J. Kelly (), R. Barends, A. G. Fowler, A. Megrant, E. Jeffrey, T. C. White, D. Sank, J. Y. Mutus, B. Campbell, Yu Chen, Z. Chen, B. Chiaro, A. Dunsworth, I.-C. Hoi, C. Neill, P. J. J. O’Malley, C. Quintana, P. Roushan, A. Vainsencher, J. Wenner, A. N. Cleland and John M. Martinis ()
Additional contact information
J. Kelly: University of California
R. Barends: University of California
A. G. Fowler: University of California
A. Megrant: University of California
E. Jeffrey: University of California
T. C. White: University of California
D. Sank: University of California
J. Y. Mutus: University of California
B. Campbell: University of California
Yu Chen: University of California
Z. Chen: University of California
B. Chiaro: University of California
A. Dunsworth: University of California
I.-C. Hoi: University of California
C. Neill: University of California
P. J. J. O’Malley: University of California
C. Quintana: University of California
P. Roushan: University of California
A. Vainsencher: University of California
J. Wenner: University of California
A. N. Cleland: University of California
John M. Martinis: University of California

Nature, 2015, vol. 519, issue 7541, 66-69

Abstract: A quantum error correction scheme is demonstrated in a system of superconducting qubits, and repeated quantum non-demolition measurements are used to track errors and reduce the failure rate; increasing the system size from five to nine qubits improves the failure rate further.

Date: 2015
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DOI: 10.1038/nature14270

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