TY  - CONF
AU  - Xu, Xuexin
AU  - Ansari, Mohammad
TI  - Parasitic free gate
M1  - FZJ-2023-00056
PY  - 2022
AB  - Implementation of high-performance two-qubit gates is a key factor for scalable quantum computation. However, the state-of-the-art superconducting two-qubit gates are yet far from being perfect due to the parasitic ZZ coupling. In this paper, we propose a parasitic free (PF) gate to suppress such unwanted interaction in use of the tunable coupler. The gate is operated in two modes: in idle mode the coupler frequency is tuned such that the two qubits are effectively decoupled; in driven mode the coupler frequency is tuned so as to result in a nonzero static ZZ interaction, which later can be cancelled by the dynamical part. Our theory shows that using this method the fidelity of a CR gate is able to achieve the coherence limit.
T2  - APS March Meeting
CY  - 14 Mar 2022 - 18 Mar 2022, Chicago (USA)
Y2  - 14 Mar 2022 - 18 Mar 2022
M2  - Chicago, USA
LB  - PUB:(DE-HGF)6
UR  - https://juser.fz-juelich.de/record/916716
ER  -