论文标题
量子级联激光谐波频率梳中的强度相关性
Intensity correlations in quantum cascade laser harmonic frequency combs
论文作者
论文摘要
这里提出了一项关于量子级联激光器（QCL）发出的谐波频率梳的新研究，这表明表征发射光谱的双模式之间存在强度相关性。这些源自由活动介质的三阶非线性驱动的四波混合（FWM）过程。对这种相关性的研究对于新一代半导体设备的工程至关重要，并有可能成为具有量子特性（例如挤压和纠缠的量子特性）的光线发射器。从实验结果开始，讨论了最先进技术的局限性以及可能导致检测非古典现象的方法，或者在引人注目的观点中，在中型光中产生量子相关性。
A novel study on harmonic frequency combs emitted by Quantum Cascade Lasers (QCLs) is here presented, demonstrating the presence of intensity correlations between twin modes characterising the emission spectra. These originate from a Four-Wave Mixing (FWM) process driven by the active medium's third-order non-linearity. The study of such correlations is essential for the engineering of a new generation of semiconductor devices with the potential of becoming integrated emitters of light with quantum properties, such as squeezing and entanglement. Starting from experimental results, the limits of state-of-the-art technology are discussed as well as the possible methodologies that could lead to the detection of non-classical phenomena, or alternatively improve the design of QCLs, in the compelling perspective of generating quantum correlations in mid-infrared light.
