论文标题
驱动腔中的照片诱导的电子配对
Photo-induced electron pairing in a driven cavity
论文作者
论文摘要
我们演示了通过两光子过程在腔体内的激光光子虚拟散射如何在二维材料中诱导可控的远程电子相互作用。我们表明，从空腔中进行的红色（蓝色）激光灯产生了吸引人的（排斥性）相互作用，其强度与激光强度成正比。此外，我们发现除了非常低的频率以外，相互作用没有有效筛选。对于逼真的腔参数，抑制了通过非弹性光子散射对电子的加热，并抑制了相干的电子相互作用。当相互作用吸引人时，它们会在库珀通道中以与驱动强度的平方根成正比的温度导致不稳定性。我们的结果为在各种二维材料中进行工程电子相互作用提供了新的途径，包括AB堆放的双层石墨烯以及Laalo3和Srtio3之间的导电界面。
We demonstrate how virtual scattering of laser photons inside a cavity via two-photon processes can induce controllable long-range electron interactions in two-dimensional materials. We show that laser light that is red(blue)-detuned from the cavity yields attractive(repulsive) interactions, whose strength is proportional to the laser intensity. Furthermore, we find that the interactions are not screened effectively except at very low frequencies. For realistic cavity parameters, laser-induced heating of the electrons by inelastic photon scattering is suppressed and coherent electron interactions dominate. When the interactions are attractive, they cause an instability in the Cooper channel at a temperature proportional to the square root of the driving intensity. Our results provide a novel route for engineering electron interactions in a wide range of two-dimensional materials including AB-stacked bilayer graphene and the conducting interface between LaAlO3 and SrTiO3.
