Non-hermitian Floquet perspective on high harmonic generation and above threshold ionization spectra from Photon statistics
- URL: http://arxiv.org/abs/2406.13109v1
- Date: Tue, 18 Jun 2024 23:47:30 GMT
- Title: Non-hermitian Floquet perspective on high harmonic generation and above threshold ionization spectra from Photon statistics
- Authors: Nimrod Moiseyev,
- Abstract summary: We show the coincidence between the high harmonic generation spectra (HGS) and the number of absorbed odd infrared (IR) photons leading to emitted ultraviolet (XUV) radiation.
This is achieved through post-selection of the IR photons, conserving the total energy of the absorbed odd IR photons and the emitted XUV photons.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We present a proof based on non-hermitian Floquet theory that confirms the experimental findings of Tsatrafylis and his colleagues in 2017, demonstrating the coincidence between the high harmonic generation spectra (HGS) and the number of absorbed odd infrared (IR) photons leading to emitted extreme ultraviolet (XUV) radiation. This coincidence is achieved through post-selection of the IR photons, conserving the total energy of the absorbed odd IR photons and the emitted XUV photons. Our derivation is consistent with their results and relies on our ability to compute the HGS in ultra-high-intensity lasers using non-Hermitian quantum mechanics (NHQM), which competes with above-threshold ionization (ATI). Through our NHQM theoretical simulation, we identify the regimes where there is correspondence between the HHG and ATI spectra and annihilated pump photons (with post-selection). Additionally, we demonstrate that the photon statistics in HHG exhibit Wigner-type distributions, which reflect the quantum chaotic dynamics of electrons at the cutoff of the plateau of the HGS. We emphasize that our findings underscore a unified mechanism governing the three distinct measurements of HGS, ATI, and IR photon number distribution, none of which require the quantization of the electromagnetic field.
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