Usman Javed, Muhammad Qasim Khan, Faisal Munir, Muhammad Usman, Muhammad Asad Iqbal, Zeeshan Mujahid, Faisal Nadeem, Yanpeng Zhang. "Non-Hermitian optical bistability with polarization quantization in Sm3+:BiPO4." Applied Physics Letters, 2026. doi:10.1063/5.0299133