Version 1
: Received: 27 March 2024 / Approved: 28 March 2024 / Online: 28 March 2024 (09:43:44 CET)
Version 2
: Received: 19 April 2024 / Approved: 22 April 2024 / Online: 23 April 2024 (12:47:32 CEST)
Yang, X.-Y.; Zhang, H.-F.; Du, L.; Tao, H.-R.; Guo, L.-L.; Wang, T.-L.; Jia, Z.-L.; Kong, W.-C.; Chen, Z.-Y.; Duan, P.; et al. Fast, Universal Scheme for Calibrating Microwave Crosstalk in Superconducting Circuits. Applied Physics Letters 2024, 125, doi:10.1063/5.0211159.
Yang, X.-Y.; Zhang, H.-F.; Du, L.; Tao, H.-R.; Guo, L.-L.; Wang, T.-L.; Jia, Z.-L.; Kong, W.-C.; Chen, Z.-Y.; Duan, P.; et al. Fast, Universal Scheme for Calibrating Microwave Crosstalk in Superconducting Circuits. Applied Physics Letters 2024, 125, doi:10.1063/5.0211159.
Yang, X.-Y.; Zhang, H.-F.; Du, L.; Tao, H.-R.; Guo, L.-L.; Wang, T.-L.; Jia, Z.-L.; Kong, W.-C.; Chen, Z.-Y.; Duan, P.; et al. Fast, Universal Scheme for Calibrating Microwave Crosstalk in Superconducting Circuits. Applied Physics Letters 2024, 125, doi:10.1063/5.0211159.
Yang, X.-Y.; Zhang, H.-F.; Du, L.; Tao, H.-R.; Guo, L.-L.; Wang, T.-L.; Jia, Z.-L.; Kong, W.-C.; Chen, Z.-Y.; Duan, P.; et al. Fast, Universal Scheme for Calibrating Microwave Crosstalk in Superconducting Circuits. Applied Physics Letters 2024, 125, doi:10.1063/5.0211159.
Abstract
A challenge in building large-scale superconducting quantum processors is the precise control and manipulation of the qubit state. However, the crosstalk between the microwave control lines impedes the parallel execution of high-fidelity digital and analog quantum operations. Here, we propose and demonstrate a universal compensation protocol for calibrating the microwave signal crosstalk. We also introduce amplified error sequences to optimize the accuracy. Furthermore, we show a definitive improvement in parallel gate operations with crosstalk cancellation, demonstrating the technique's effectiveness. This work paves the way for superconducting hardware that features automated calibration of microwave crosstalk, leading to enhanced fidelities in multiqubit circuits.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.