Zhang X, Li R, Wu Haibin
State Key Laboratory of Precision Spectroscopy, Department of Physics, East China Normal University, Shanghai 200062, China.
Sci Rep. 2016 Mar 3;6:22560. doi: 10.1038/srep22560.
Manipulating the nature of photons emission is one of the basic tasks in quantum optics and photonics. The ever growing list of quantum applications requires a robust means of controlling the strongly coupled coherent interaction of photons and matter. Here, we investigate three-photon transmission spectra in a strongly coupled cavity polariton system and show that the correlation functions and transmitted photon stream can be optically manipulated. The dynamics of single photons and photon pairs at the polariton resonances can be changed by light from a single external coupling laser. At the "dark-state polariton," three-photon transmission is a perfectly coherent field in contrast to the strong photon-bunching behavior of a typical cavity quantum electrodynamics system. When the detuned probe light is tuned to the "bright polariton," the light exhibits a dramatic photon antibunching effect. Remarkably, the Fano-resonant asymmetric three-photon transmission caused by the interference between the dressed states leads to a new quantum feature that is strongly nonclassical (the third-order correlation function g((3))(0, 0) ≪ 1) and has a wide and tunable bandwidth. The dependence of the intrinsic third-order correlation and time symmetry of the photon stream on the controlled parameters is also examined. Strongly nonclassical, all-optically controllable multi-photon dynamics are very important for future quantum devices and metrology.
操控光子发射的特性是量子光学和光子学中的基本任务之一。不断增加的量子应用列表需要一种强大的手段来控制光子与物质之间强耦合的相干相互作用。在此，我们研究了强耦合腔极化激元系统中的三光子透射光谱，并表明相关函数和透射光子流可以通过光学手段进行操控。单光子和光子对在极化激元共振处的动力学可以通过来自单个外部耦合激光器的光来改变。在“暗态极化激元”处，与典型的腔量子电动力学系统中强烈的光子聚束行为相反，三光子透射是一个完全相干的场。当失谐的探测光调谐到“亮极化激元”时，光表现出显著的光子反聚束效应。值得注意的是，由缀饰态之间的干涉引起的法诺共振非对称三光子透射导致了一种新的量子特性，这种特性是强非经典的（三阶相关函数g((3))(0, 0) ≪ 1），并且具有宽且可调谐的带宽。我们还研究了光子流的固有三阶相关性和时间对称性对控制参数的依赖性。强非经典的、全光可控的多光子动力学对于未来的量子器件和计量学非常重要。
