A double-slit ghost interference experiment performed on an entangled resource using type-II non-collinear degenerate spontaneous parametric down-conversion （SPDC） is demonstrated. The influence of the dis- tance be...A double-slit ghost interference experiment performed on an entangled resource using type-II non-collinear degenerate spontaneous parametric down-conversion （SPDC） is demonstrated. The influence of the dis- tance between the double-slit and the bucket detector preceded by a pinhole is studied. The experimental results show that the interference fringes become increasingly distinct with higher visibility when the pinhole-double-slit distance increases. A first-order classical theory based on the Klyshko＇s two-photon advanced-wave picture, and a second-order quantum-image theory are provided for explanations. The fitting results indicate that the divergence of the converted fluorescence significantly affects the ghost fringes.展开更多
基金supported by the National Natural Science Foundation of China under Grant No.11075152
文摘A double-slit ghost interference experiment performed on an entangled resource using type-II non-collinear degenerate spontaneous parametric down-conversion （SPDC） is demonstrated. The influence of the dis- tance between the double-slit and the bucket detector preceded by a pinhole is studied. The experimental results show that the interference fringes become increasingly distinct with higher visibility when the pinhole-double-slit distance increases. A first-order classical theory based on the Klyshko＇s two-photon advanced-wave picture, and a second-order quantum-image theory are provided for explanations. The fitting results indicate that the divergence of the converted fluorescence significantly affects the ghost fringes.
