Laser & Photonics Review
Intra‐Cavity Laser Manipulation of High‐Dimensional Non‐Separable States (Laser Photonics Rev. 18(4)/2024)
Lan Hai, Zhichao Zhang, Shi-Long Liu, Lang Li, Zhiyuan Zhou, Qing Wang, Yanze Gao, Chunqing Gao, Yijie Shen, Shiyao Fu
Abstract
High-Dimensional Non-Separable States In article 2300593, Lan Hai, Zhichao Zhang, Shiyao Fu, and co-workers propose a method to generate multi-partite non-separable states within a specially designed cavity. By introducing the coupling mechanism of spin angular momentum and orbital angular momentum (SAM-OAM) into a folded-cavity laser, a group of classical non-separable states combining three degrees of freedom are generated directly and well controlled. The non-separability of eight experimentally generated Greenberger–Horne–Zeilinger (GHZ)-like states, measured by a proposed state tomography method to reconstruct the density matrices and calculate fidelities, is verified and enables multiple quantum analogues tasks.