论文标题
由于不对称连接参数引起的鱿鱼阵列响应的数值研究
Numerical study of SQUID array responses due to asymmetric junction parameters
论文作者
论文摘要
超导量子干扰装置阵列已广泛研究其高磁场灵敏度。这些设备的性能在很大程度上取决于其约瑟夫森连接的特征参数，即它们的临界电流和分流电阻。使用电阻分流的连接模型并包括热噪声，我们通过独立研究临界电流和连接电阻的变化来对不对称的约瑟夫森连接的影响进行数值研究。我们比较了DC平台与1D平行鱿鱼阵列的电压响应，并研究了最大传递函数取决于并行的连接数量，筛选参数和热噪声强度。我们的结果表明，与具有相同连接连接的鱿鱼阵列或临界电流中的squid阵列相比，最大传递函数和线性随着连接电阻不同的阵列的并行数量而增加。
Superconducting quantum interference device arrays have been extensively studied for their high magnetic field sensitivity. The performance of these devices strongly depends on the characteristic parameters of their Josephson junctions, i.e. their critical currents and shunt resistances. Using a resistively shunted junction model and including thermal noise, we perform a numerical investigation of the effects of asymmetric Josephson junctions by independently studying variations in the critical currents and junction resistances. We compare the voltage response of a dc-SQUID with a 1D parallel SQUID array and study the maximum transfer function dependence on the number of junctions in parallel, the screening parameter and thermal noise strength. Our results show that the maximum transfer function and linearity increase with the number of junctions in parallel for arrays with different junction resistances, in contrast to SQUID arrays with identical junctions or with spreads in the critical currents.
