TY  - JOUR
AU  - Ku, Jaseung
AU  - Xu, Xuexin
AU  - Brink, Markus
AU  - McKay, David C.
AU  - Hertzberg, Jared B.
AU  - Ansari, Mohammad H.
AU  - Plourde, B. L. T.
TI  - Suppression of Unwanted Z Z Interactions in a Hybrid Two-Qubit System
JO  - Physical review letters
VL  - 125
IS  - 20
SN  - 1079-7114
CY  - College Park, Md.
PB  - APS
M1  - FZJ-2020-05098
SP  - 200504
PY  - 2020
AB  - Mitigating crosstalk errors, whether classical or quantum mechanical, is critically important for achieving high-fidelity entangling gates in multiqubit circuits. For weakly anharmonic superconducting qubits, unwanted ZZ interactions can be suppressed by combining qubits with opposite anharmonicity. We present experimental measurements and theoretical modeling of two-qubit gate error for gates based on the cross resonance interaction between a capacitively shunted flux qubit and a transmon, and demonstrate the elimination of the ZZ interaction.
LB  - PUB:(DE-HGF)16
C6  - pmid:33258640
UR  - <Go to ISI:>//WOS:000588242400004
DO  - DOI:10.1103/PhysRevLett.125.200504
UR  - https://juser.fz-juelich.de/record/888655
ER  -