Manipulation of Superposed Vortex States of $γ$ Photon via Nonlinear Compton Scattering

• URL: http://arxiv.org/abs/2604.13724v1
• Date: Wed, 15 Apr 2026 10:59:15 GMT
• Title: Manipulation of Superposed Vortex States of $γ$ Photon via Nonlinear Compton Scattering
• Abstract summary: Vortex $$ photons in superposition states have important applications in photonuclear, high-energy, and strong-field physics.<n>Here, we put forward a novel method for the generation of vortex $$ photon in superposition states, with controllable orbital angular momentum separation.<n>We develop a strong-field quantum electrodynamics framework to reveal the underlying mechanism and calculate the radiation probabilities.
• Score: 2.3441290869706064
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Vortex $γ$ photons in superposition states have important applications in photonuclear, high-energy, and strong-field physics. However, their controlled generation in the $γ$-ray regime remains a great challenge. Here, we put forward a novel method for the generation of vortex $γ$ photon in superposition states, with controllable orbital angular momentum (OAM) separation $Δ\ell^\prime$ and modal weights, via nonlinear Compton scattering driven by multifrequency circularly polarized laser fields. We develop a strong-field quantum electrodynamics (QED) framework to reveal the underlying mechanism and calculate the radiation probabilities. In our method, the superposition arises from interference between energy-degenerate multiphoton pathways carrying distinct OAM. For two-frequency fields, the OAM separation follows $Δ\ell'=ν\mp1$ (upper/lower sign for equal/opposite helicities), and modal weights are tunable by laser intensities, with $ν$ the frequency ratio. Vortex $γ$ photons in controllable superposition states from our method have significant applications in strong-field QED and nuclear photonics.

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