Design of high brightness entangled source based on periodically poled KTiOPO4 crystal | |
Ren Ji-Gang ; Zhang Han ; Cai Xin-Dong ; Yin Juan ; Zhou Fei ; Peng Cheng-Zhi | |
2010-10-12 ; 2010-10-12 | |
关键词 | entanglement quasi-phase-matched periodically poled KTiOPO4 crystal Physics, Multidisciplinary |
中文摘要 | Entangled states are key resource for quantum information processing. In linear optics quantum computing,the most widely used entanglement resource is polarization entangled photon pairs generated via type-II spontaneous parametric down-conversion. However, the brightness is not. sufficient to perform quantum communication experiment between ground and satellite. In this paper we have developed a high-brightness entangled resource based on periodic polarization and quasi-phase marched periodically poled KTiOPO4 crystal. The number of generated entangled pairs is about 1.6 x 10(4) s(-1) mW(-1) and the visibility is 27:1. Our source is with about one order of magnitude brighter than previous sources based on P-barium borate crystal. This leads to an immediate possibility for applications in the field of quantum key distribution, quantum teleportation and quantum computation. Particularly it would form a solid basis for future global quantum network. |
语种 | 中文 ; 中文 |
出版者 | CHINESE PHYSICAL SOC ; BEIJING ; P O BOX 603, BEIJING 100080, PEOPLES R CHINA |
内容类型 | 期刊论文 |
源URL | [http://hdl.handle.net/123456789/81374] |
专题 | 清华大学 |
推荐引用方式 GB/T 7714 | Ren Ji-Gang,Zhang Han,Cai Xin-Dong,et al. Design of high brightness entangled source based on periodically poled KTiOPO4 crystal[J],2010, 2010. |
APA | Ren Ji-Gang,Zhang Han,Cai Xin-Dong,Yin Juan,Zhou Fei,&Peng Cheng-Zhi.(2010).Design of high brightness entangled source based on periodically poled KTiOPO4 crystal.. |
MLA | Ren Ji-Gang,et al."Design of high brightness entangled source based on periodically poled KTiOPO4 crystal".(2010). |
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