论文标题
两光束碰撞中的全光量子真空信号
All-optical Quantum Vacuum Signals in Two-Beam Collision
论文作者
论文摘要
量子电动力学的基本理论预测真空类似于可极化的培养基。这引起了电磁场与光线散射现象之间有效的非线性相互作用。我们研究了使用带有圆形和椭圆形横截面的光束在泵探针设置中两种光学激光脉冲的碰撞，并估计由量子真空非线性引起的可识别信号光子的数量。在此分析中，我们研究了从驱动激光器的背景下可分辨的量子真空信号的策略。主要结果之一是，两个最大聚焦激光器的碰撞不会导致最佳的可识别信号。取而代之的是，扩大焦点通常会改善信号到远场中的背景分离。
The fundamental theory of quantum electrodynamics predicts the vacuum to resemble a polarizable medium. This gives rise to effective nonlinear interactions between electromagnetic fields and light-by-light scattering phenomena. We study the collision of two optical laser pulses in a pump-probe setup using beams with circular and elliptic cross section and estimate the number of discernible signal photons induced by quantum vacuum nonlinearities. In this analysis we study strategies to optimize the quantum vacuum signal discernible from the background of the driving lasers. One of the main results is that the collision of two maximally focused lasers does not lead to the best discernible signal. Instead, widening the focus typically improves the signal to background separation in the far field.
