标题： 压缩频率梳 显示英文标题

标题： Squeezing frequency combs

摘要： 我们已经发展出了同步泵浦Ⅰ类光学参量振荡器（SPOPO）的完整理论。 我们推导了振荡阈值和产生的锁模信号光束特性的表达式。 我们计算了该装置的输出量子涨落，发现当退化情况（信号和闲频之间的频率一致）下，接近阈值时，对于一个由不同频率的信号模式相干线性叠加而成的定义明确的“超模”，或者称为频率梳，可以获得完美的压缩。 显示英文摘要

摘要： We have developed the full theory of a synchronously pumped type I optical parametric oscillator (SPOPO). We derive expressions for the oscillation threshold and the characteristics of the generated mode-locked signal beam. We calculate the output quantum fluctuations of the device, and find that, in the degenerate case (coincident signal and idler set of frequencies), perfect squeezing is obtained when one approaches threshold from below for a well defined "super-mode', or frequency comb, consisting of a coherent linear superposition of signal modes of different frequencies which are resonant in the cavity.