https://doi.org/10.1140/epjc/s10052-024-12519-w
Regular Article - Theoretical Physics
Resonant entanglement of photon beams by a magnetic field
1
Department of Physics, Tomsk State University, Lenin Ave. 36, 634050, Tomsk, Russia
2
P.N. Lebedev Physical Institute, Leninskiy Ave. 53, 119991, Moscow, Russia
3
Institute of Physics, University of São Paulo, Rua do Matão, 1371, 05508-090, São Paulo, Brazil
Received:
6
December
2023
Accepted:
4
February
2024
Published online:
16
February
2024
In spite of the fact that photons do not interact with an external magnetic field unless nonlinearity of QED is taken into account, the latter field may indirectly affect photons in the presence of a charged environment. This opens up an interesting possibility to continuously control the entanglement of photon beams without using any crystalline devices. We study this possibility in the framework of an adequate QED model. In an approximation it was discovered that such entanglement has a resonant nature, namely, a peak behavior at certain magnetic field strengths, depending on characteristics of photon beams direction of the magnetic field and parameters of the charged medium. Numerical calculations illustrating the above-mentioned resonant behavior of the entanglement measure and some concluding remarks are presented.
Alexander I. Breev and Dmitry M. Gitman contributed equally to this work.
© The Author(s) 2024
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