Frequency indistinguishibility investigation of generated coincident-frequency entanglement via ultra-fast pulsed sources
文献类型：期刊论文
| 作者 | Zhang Yu2; Quan RunAi2; Bai Yun2; Hou FeiYan2; Liu Tao2 ; Zhang ShouGang2; Dong RuiFang2
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| 刊名 | ACTA PHYSICA SINICA
 |
| 出版日期 | 2013 |
| 卷号 | 62期号:14 |
| 关键词 | QUANTUM CRYPTOGRAPHY KTIOPO4 PHOTONS STATE TELEPORTATION RESOLUTION coincident-frequency entanglement Hong-Ou-Mandel interferometric measurement coincidence counts |
| ISSN号 | 1000-3290 |
| 英文摘要 | The frequency entangled biphoton source generated via spontaneous parametric down-conversion process (SPDC) has found numerous applications in quantum information processing and relevant fields. We report on an experimental generation of coincident-frequency entanglement from periodically poled potassium titanyl phosphate, pumped by an ultra-short pulsed optical source with duration less than 20 fs. Based on the Hong-Ou-Mandel interferometric coincidence measurement setup, a visibility of about 42% is demonstrated, which indicates degraded frequency indistinguishibility of the down-converted biphotons. Through theoretical investigation, such a degradation can be perfectly explained by the nonnegligible second-order dispersion terms in the Taylor-expanded phase mismatching function for the case of ultra-broadband spectrum of the pulsed pump. The fitting to the experimental results is further used and perfect agreement is achieved. The results imply that the spectral bandwidth of the pump can affect the generated coincident-frequency entanglement. |
| 资助项目 | [State Key Scientific Instruments and Equipment Development Program of China] ; [National Natural Science Foundation of China] ; [Key Fund for the "Western Light" Talent Cultivation Plan of the Chinese Academy of Sciences] ; [Fund for the Scientific and Technical Innovation "Cross and Cooperation Team" of the Chinese Academy of Sciences] ; [State Key Laboratory of Transient Optics and Photonics, China] |
| 语种 | 英语 |
| 源URL | [http://210.72.145.45/handle/361003/13378]  |
| 专题 | 中国科学院国家授时中心 |
| 作者单位 | 1.中国科学院大学 2.中国科学院国家授时中心 |
| 推荐引用方式 GB/T 7714 | Zhang Yu,Quan RunAi,Bai Yun,et al. Frequency indistinguishibility investigation of generated coincident-frequency entanglement via ultra-fast pulsed sources[J]. ACTA PHYSICA SINICA,2013,62(14). |
| APA | Zhang Yu.,Quan RunAi.,Bai Yun.,Hou FeiYan.,Liu Tao.,...&Dong RuiFang.(2013).Frequency indistinguishibility investigation of generated coincident-frequency entanglement via ultra-fast pulsed sources.ACTA PHYSICA SINICA,62(14). |
| MLA | Zhang Yu,et al."Frequency indistinguishibility investigation of generated coincident-frequency entanglement via ultra-fast pulsed sources".ACTA PHYSICA SINICA 62.14(2013). |
入库方式： OAI收割
来源：国家授时中心
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