用高强度Laser场探测QED真空非线性的光学特征
Detectable Optical Signatures of QED Vacuum Nonlinearities using High-Intensity Laser Fields
摘要：
量子电动力学（QED）是迄今为止经过最精确检验的量子场论。然而，特别是在高强度的制度，它预测到目前为止还没有直接在全光学实验，如光子光子散射现象引起的量子真空波动的各种现象。在这里，我们专注于在高强度的电磁场制度的量子真空效应的全光学签名。我们提出了一个实验装置产生的信号光子可区分的背景。这种配置是基于两个光脉冲petawatt激光器：一个产生一个狭窄的，但高强度的散射中心，由另一个探测。我们计算的信号光子的微分数，可与此字段配置解析，并将其与驱动激光束的背景进行比较。
英文摘要：
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.
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