超导量子计算机目前正在快速发展，决定量子计算机性能的关键因素之一是量子门的保真度。目前孤立的单、双比特门已经具有较高保真度，但是并行量子逻辑门由于量子比特间的相互串扰，通常表现较差。本文主要研究并行逻辑门保真度优化问题。通过优化量子门的作用时间、振幅，以及采用CRAB算法优化量子门的波形后，并行量子逻辑门的保真度可以达到0.99以上，相较于优化前相互串扰受到了一定的抑制。改变第三个比特q3的频率发现，当所选频率远离周围比特和耦合器的频率且处于高频时，串扰影响最小。本文的研究成果为降低并行逻辑门的串扰影响奠定了基础，有望在未来进一步提高量子计算机的实用性。

Superconducting quantum computers are currently developing rapidly, and one of the key factors determining the performance of quantum computers is the fidelity of quantum gates. At present, isolated single- and double-qubit gates have high fidelity, but parallel quantum logic gates usually perform poorly due to the mutual crosstalk between qubits. This paper mainly studies the problem of the optimization of parallel logic gates’ fidelity. By optimizing the time and amplitude of the quantum gates, and using the CRAB algorithm to optimize the waveform of the quantum gates, the fidelity of the parallel quantum logic gates can reach more than 0.99, and the mutual crosstalk is suppressed to a certain extent compared to that before the optimization. Changing the frequency of the third bit q3, it turned out that the effect of crosstalk was minimal when the selected frequency was far from the frequencies of the surrounding bits and couplers and was in the high frequency range. The research results of this paper lay a foundation for reducing the crosstalk effect of parallel logic gates, which is expected to further improve the practicality of quantum computers in the future.