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arXiv 2101.04461hep-phphysics.opticsquant-ph
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多色laser脉冲碰撞中的量子真空特征

Quantum vacuum signatures in multi-color laser pulse collisions

Holger Gies, Felix Karbstein, Leonhard Klar

摘要:

量子真空涨落引起电磁场之间有效的非线性相互作用。由宏观场驱动的量子真空非线性的一个突出特征是信号光子在诸如频率、传播方向和偏振等特性上与驱动场不同。我们设计了一种策略,有效地跟踪各种真空波动介导的相互作用过程,以确定最有前途的信号光子通道。作为一个例子,我们研究了多达四个光脉冲的碰撞,并注意和频和差频的产生。我们演示了如何使用这些信息来提高信号光子产率在激光脉冲碰撞给定的总激光能量。

英文摘要:

Quantum vacuum fluctuations give rise to effective non-linear interactions between electromagnetic fields. A prominent signature of quantum vacuum nonlinearities driven by macroscopic fields are signal photons differing in characteristic properties such as frequency, propagation direction and polarization from the driving fields. We devise a strategy for the efficient tracing of the various vacuum-fluctuation-mediated interaction processes in order to identify the most prospective signal photon channels. As an example, we study the collision of up to four optical laser pulses and pay attention to sum and difference frequency generation. We demonstrate how this information can be used to enhance the signal photon yield in laser pulse collisions for a given total laser energy.

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