量子计算需要保持量子态的相干和纠缠特性,但这两个特性都很容易遭到消相干过程的破坏,因此如何克服消相干成为实现量子计算的一个关键.利用经典电路图论,得出了磁通偏置超导电路的哈密顿量,再利用Bloch-Redfield方程研究了超导电路多能级系统的动力学演化,最后在二能级近似下,发现了电路之间的互感对系统谱密度的影响,并讨论了如何调节电路之间的各个互感,减小磁通量子比特的消相干时间.
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