Emergence of Gaussian entanglement and non-Gaussianity in high-harmonic generation driven by bright squeezed light

arXiv:2606.22714 · quant-ph, physics.optics · Submitted 2026-06-21 · Read on arXiv

quant-ph, physics.optics

Submitted: 2026-06-21

Updated: 2026-10-13

Comments: 20 pages (16 main text + 7 Supplementary Material), 10 figures (7 main text + 3 Supplementary Material). In v2 we have included additional text stemming from the peer-review process (paper accepted in J. Phys. B.). This includes demonstration of the exactness of the single quadrature expansion, effect of Gaussian noise and further analysis about the non-gaussian transition. Comments are welcome

Code: https://github.com/episanty/RB-SFA

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Entanglement — 3× in this paper · explained in 4 episodes
• Benchmark — 1× in this paper · explained in 2 episodes
• Fidelity — 1× in this paper · explained in 2 episodes
• Non-Gaussianity — 1× in this paper · explained in 3 episodes

Sources

• Weak measurement in strong laser field physics
• Generation of circular polarized high-order harmonics from single color quantum light
• Fluctuation-induced symmetry breaking in high harmonic generation for bicircular quantum light
• Erasing photons from bright squeezed vacuum light via above-threshold ionization
• Theory of quantum optics and optical coherence in high harmonic generation

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