Spin-orbital entanglement paper published in Phys. Rev. Lett.

Our paper about spin-orbital entanglement witness with x-ray scattering theory, has been published in Physical Review Letters! Congrats to Zecheng and Shuhan. In this work, we propose a general framework for establishing a tight Bell-test bound using non-Hermitian scattering operators, which naturally encode the scattering geometry in multi-orbital systems. This opens a new route toward experimentally accessible entanglement witnesses in complex quantum materials.