A time/frequency quantum analysis of the light generated by synchronously pumped optical parametric oscillators
A time/frequency quantum analysis of the light generated by synchronously pumped optical parametric oscillators
复制标题
对同步泵浦光参量振荡器产生的光进行时间/频率量子分析
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
C. Fabre
中科院分区：
文献类型：
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作者：
Shifeng Jiang;N. Treps;C. Fabre
本文提出了一个确定同步泵浦光参量振荡器（SPOPO）在阈值以下工作时所产生光的量子特性的一般模型。该模型将时间和频率视为平等的，这使我们能够找到新的量子特性，例如与载波包络偏移（CEO）相位相关的量子特性，并考虑接近真实的实验的情况。我们发现，除了多模压缩在所谓的“supermodes”，系统表现出正交纠缠频率梳相反CEO相位之间。我们还确定了单个脉冲的量子特性及其与相邻脉冲的量子相关性。最后，我们确定了量子克拉美-罗极限的超短时间延迟测量使用给定数量的脉冲产生的SPOPO。
We present in this paper a general model for determining the quantum properties of the light generated by a synchronously pumped optical parametric oscillator (SPOPO) operating below threshold. This model considers time and frequency on an equal footing, which allows us to find new quantum properties, related for example to the carrier envelope offset (CEO) phase, and to consider situations that are close to real experiments. We show that, in addition to multimode squeezing in the so-called ‘supermodes’, the system exhibits quadrature entanglement between frequency combs of opposite CEO phases. We have also determined the quantum properties of the individual pulses and their quantum correlations with the neighboring pulses. Finally, we determine the quantum Cramer–Rao limit for an ultra-short time delay measurement using a given number of pulses generated by the SPOPO.