极化可区分光子的双光子干涉  

Interference of Two Distinguishable Photons

作　　者：江国进[1] 陈平形[1] 李承祖[1] 

机构地区：[1]国防科学技术大学物理系,湖南长沙410073

出　　处：《激光与光电子学进展》2008年第12期37-40,共4页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(10774192)资助课题

摘　　要：双光子干涉本质是整体状态不可区分。两光子可区分而整体态不可区分时,仍然能发生双光子干涉。将HOM型与Franson型双光子干涉相结合,提出一个可实现两光子可区分而整体态不可区分的双光子干涉实验方案。此双光子干涉实验方案中两光子极化方向相互垂直,但方案中并不擦除两光子的极化可区分信息。The interference of two photons is essentially due tO the indistinguishability of the two-photon states. The interference of two-photon can also take place when the two photons are distinguishable while the two-photon states are indistinguishable. A scheme to discriminate the two photons from each other is proposed by combining the interferences of HOM type and Franson type photons, while the two-photon states are indistinguishable. n this two-photon-interference scheme the polariation directions of the two photons are vertical, but the distinguishable information of polarization will not be erased.

关 键 词：量子光学 双光子态 干涉 

分 类 号：O432.2[机械工程—光学工程]