论文标题
使用高强度激光场的QED真空非线性的可检测光学特征
Detectable Optical Signatures of QED Vacuum Nonlinearities using High-Intensity Laser Fields
论文作者
论文摘要
最新的量子电动力学（QED）是最精确测试的量子场理论。然而，尤其是在高强度方案中，它预测了各种现象，这些现象到目前为止尚未在全光实验中直接访问，例如量子真空波动引起的光子光子散射现象。在这里，我们专注于在电磁场的高强度状态下可访问的量子真空效应的全光标志。我们提出了一个实验设置，从而引起了与背景可区分的信号光子。该配置基于两个光学脉冲Petawatt激光器：一个生成一个狭窄但高强度的散射中心，另一个散射中心可以由另一个散射中心进行探测。我们通过分析该场配置来计算可实现的信号光子的差异数，并将其与驱动激光束的背景进行比较。
Up to date, quantum electrodynamics (QED) is the most precisely tested quantum field theory. Nevertheless, particularly in the high-intensity regime it predicts various phenomena that so far have not directly been accessible in all-optical experiments, such as photon-photon scattering phenomena induced by quantum vacuum fluctuations. Here, we focus on all-optical signatures of quantum vacuum effects accessible in the high-intensity regime of electromagnetic fields. We present an experimental setup giving rise to signal photons distinguishable from the background. This configuration is based on two optical pulsed petawatt lasers: one generates a narrow but high-intensity scattering center to be probed by the other one. We calculate the differential number of signal photons attainable with this field configuration analytically and compare it with the background of the driving laser beams.
