title: High visibility two-photon interference with classical light.
abstract: Two-photon interference with independent classical sources, in which superposition of two indistinguishable two-photon paths plays a key role, is of limited visibility with a maximum value of 50%. By using a random-phase grating to modulate the wavefront of a coherent light, we introduce superposition of multiple indistinguishable two-photon paths, which enhances the two-photon interference effect with a signature of visibility exceeding 50%. The result shows the importance of phase control in the control of high-order coherence of classical light.
authors.affiliation: The MOE Key Laboratory of Weak Light Nonlinear Photonics and School of Physics, Nankai University, Tianjin 300457, China.
authors.forename: Peilong
authors.initials: P
authors.lastname: Hong
authors.forename: Lei
authors.initials: L
authors.lastname: Xu
authors.forename: Zhaohui
authors.initials: Z
authors.lastname: Zhai
authors.forename: Guoquan
authors.initials: G
authors.lastname: Zhang
mesh_terms: D003198:Computer Simulation; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D008962:Models, Theoretical; D017785:Photons; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000295:instrumentation*