Hong–Ou–Mandel interference of spin–orbit hybrid entangled photons

• DOI: 10.1063/5.0167016
• Publication Date: 2023-12-04T15:57:00Z
• Authors: Ling Hong; Xiyue Cao; Yuanyuan Chen; Lixiang Chen
• Keywords: Photon entanglement; Quantum sensor

Structured photons are a crucial resource in both classical and quantum technologies, particularly spin–orbit hybrid photons, enabling various practical applications ranging from ultra-sensitive metrology techniques to quantum-enhanced information processing tasks. However, the two-photon interference of which combines polarization modes complex transverse spatial structures across beam profile, remains unexplored. Here, we present an experimental observation Hong–Ou–Mandel (HOM) photons. The tunable q-plates that work as coupler devices used prepare forms entangled By harnessing match degree temporal domain, coalescence anti-coalescence effects resulting symmetric anti-symmetric properties incident states observed. Moreover, demonstrated feasibility photon gears through HOM theoretically analyze noise-resilient advantages based on coherent measurements. These results provide alternative route toward experiments with structured allows for controlling their compact, stable, efficient way.