Effect of mutual inductance coupling on superconducting flux qubit decoherence

Effect of mutual inductance coupling on superconducting flux qubit decoherence
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互感耦合对超导通量量子位退相干的影响

DOI:
10.3788/col20090701.0078
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发表时间:
2009
影响因子:
3.5
通讯作者:
嵇英华
嵇英华
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
江燕燕;徐华兰;嵇英华

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在Born-Markov近似和二能级近似下,利用Bloch-Redfield方程,研究了含有磁通量子比特的超导量子电路的退相干性质。电路元件间的互感耦合对退相干的影响是复杂的。不同回路间的互感耦合会缩短退相干时间。但是,同一回线的互感耦合,在一定的时间间隔内,会增加退相干时间。因此,我们可以通过改变互感参数如耦合的强度和方向来控制退相干时间。
In the Born-Markov approximation and two-level approximation, and using the Bloch-Redfield equation, the decoherence property of superconducting quantum circuit with a flux qubit is investigated. The influence on decoherence of the mutual inductance coupling between the circuit components is complicated. The mutual inductance coupling between different loops will decrease the decoherence time. However, the mutual inductance coupling of the same loop, in a certain interval, will increase the decoherence time. Therefore, we can control the decoherence time by changing the mutual inductance parameters such as the strength and direction of coupling.
DOI: 10.1017/cbo9780511976667.023
发表时间: 2010-12
期刊: --
影响因子: --
作者:
Nikolay Raychev;I. Chuang
通讯作者: Nikolay Raychev;I. Chuang