Enhancing quantum vacuum signatures with tailored laser beams
- URL: http://arxiv.org/abs/2004.04268v2
- Date: Wed, 10 Jun 2020 09:30:19 GMT
- Title: Enhancing quantum vacuum signatures with tailored laser beams
- Authors: Felix Karbstein, Elena A. Mosman
- Abstract summary: tailored laser beams provide a powerful means to make quantum vacuum signatures in strong electromagnetic fields accessible in experiment.
Main idea of the present work is to modify the far-field properties of a driving laser beam to exhibit a field-free hole in its center.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We demonstrate that tailored laser beams provide a powerful means to make
quantum vacuum signatures in strong electromagnetic fields accessible in
experiment. Typical scenarios aiming at the detection of quantum vacuum
nonlinearities at the high-intensity frontier envision the collision of focused
laser pulses. The effective interaction of the driving fields mediated by
vacuum fluctuations gives rise to signal photons encoding the signature of
quantum vacuum nonlinearity. Isolating a small number of signal photons from
the large background of the driving laser photons poses a major experimental
challenge. The main idea of the present work is to modify the far-field
properties of a driving laser beam to exhibit a field-free hole in its center,
thereby allowing for an essentially background free measurement of the signal
scattered in the forward direction. Our explicit construction makes use of a
peculiar far-field/focus duality.
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