论文标题
超导电的Terahertz发射器的极化分析证明了相互同步的宏观约瑟夫森振荡
Mutually synchronized macroscopic Josephson oscillations demonstrated by polarization analysis of superconducting terahertz emitters
论文作者
论文摘要
我们证明了约瑟夫森振荡在多个内在的约瑟夫森连接库中的库瑟夫群振荡的相互同步。对完整极化参数的详细分析允许确定堆栈之间的相位相关性：同时发射状态通过单个发射状态的线性组合和相位迟钝的线性组合描述。这证明了堆栈是通过约瑟夫森等离子体在超导底物中的，并且可以从极化分析中提取耦合矩阵。我们的发现表明，基于大量内在的约瑟夫森连接的同步，实现高功率Terahertz来源的途径。
We demonstrate mutual synchronization of Josephson oscillations in multiple stacks of intrinsic Josephson junctions of the cuprate superconductor Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$. Detailed analysis of the full polarization parameters allows the determination of a phase correlation between the stacks: a simultaneous emission state is described by a linear combination of individual emission states with a phase retardation. This proves that the stacks are coupled via a Josephson plasma in a superconducting substrate and the coupling matrices can be extracted from polarization analyses. Our findings suggest a route towards the realization of high-power terahertz sources based on the synchronization of a large number of intrinsic Josephson junctions.
