2025/12/16 by Muhammad Waseem, Waseem, Muhammad
Computer Science · Physics and Astronomy · #Atomic Physics (physics.atom-ph) #FOS: Physical sciences #Field (mathematics) #Microwave #Optics (physics.optics) #Phase (matter) #Photon #Photonic crystal #Photonics #Quantum Information and Cryptography #Quantum Physics (quant-ph) #Quantum and electron transport phenomena #Quantum dot #Quantum optics and atomic interactions #Spin (aerodynamics)
paper · pdf · doi:10.48550/arxiv.2512.14586
openalex publication_date 2025/12/16 · openalex created_date 2025/12/18 · openalex updated_date 2026/07/28
The photonic Spin Hall Effect (SHE) causes a polarization-dependent transverse shift of light at an interface. There is a significant research interest in controlling and enhancing the photonic SHE. In this paper, we theoretically investigate the microwave field control of the photonic SHE in a closed-loop Λ-type atomic system. We demonstrate that both the magnitude and angular position of the photonic SHE can be controlled by varying the relative phase ϕ between the driving optical fields and the strength of the microwave coupling Ωμ. At zero probe field detuning (Δp = 0) and ϕ=0,π, the photonic SHE magnitude reaches to upper limit equal to the half of the incident beam waist, and remains largely unaffected by the microwave strength Ωμ, but its angular position shifts linearly with increasing Ωμ. At intermediate phases, especially at ϕ= π/2, the magnitude of the photonic SHE exponentially decreases with the increase of Ωμ. Interestingly, we observed microwave-controlled switching of photonic SHE by tuning the relative phase ϕ at an optimized value of Ωμ and Ωc. In contrast, at Δp = ± Ωc, a maximum photonic SHE equal to half of the incident beam waist occurs at ϕ≤ π and Ωμ ≥ Ωp, where both real and imaginary parts of the susceptibility vanish, yielding a unit refractive index. Our results may have potential applications in microwave quantum sensing and quantum optical switches based on the photonic SHE.