All-optical Quantum Vacuum Signals in Two-Beam Collision
- URL: http://arxiv.org/abs/2205.15684v1
- Date: Tue, 31 May 2022 11:00:25 GMT
- Title: All-optical Quantum Vacuum Signals in Two-Beam Collision
- Authors: Holger Gies and Felix Karbstein and Leonhard Klar
- Abstract summary: We study the collision of two optical laser pulses in a pump-probe setup using beams with circular and elliptic cross section.
We estimate the number of discernible signal photons induced by quantum vacuum nonlinearities.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: 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.
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