超短脉冲抽运下频率一致纠缠光源量子特性实验研究*OA北大核心CSCDCSTPCD
Frequency indistinguishibility investigation of generated coincident-frequency entanglement via ultra-fast pulsed sources∗
利用自发参量下转换过程产生的频率纠缠光源在量子信息处理及相关领域中具有十分重要的应用。本文利用中心波长为792 nm,脉冲宽度小于20 fs的脉冲激光源抽运满足II类准相位匹配条件的周期极化磷酸氧钛钾晶体,实验产生了偏振相互正交的频率一致纠缠光子对。基于Hong-Ou-Mandel干涉仪的二阶量子符合干涉装置,测量到该纠缠双光子对的干涉可见度约为42%,表明其频率不可分特性较理想频率一致纠缠光源大大降低。通过理论分析给出,由于超短脉冲光源对应…查看全部>>
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 mea…查看全部>>
频率一致纠缠Hong-Ou-Mandel干涉测量符合计数
coincident-frequency entanglementHong-Ou-Mandel interferometric measurementcoincidence counts
《物理学报》 2013 (14)
193-198,6
国家自然科学基金重大仪器专项(批准号:Y133ZK110、国家自然科学基金(批准号:11174282)、中国科学院“西部之光”计划重点项目(批准号:中科院人教字(201180号)、中国科学院科技创新“交叉与合作”团队课题（批准号中科院人教字[2012]119号）和瞬态光学与光子技术国家重点实验室开放基金资助的课题.*Project supported by the State Key Scientific Instruments and Equipment Development Program of China (Grant No. Y133ZK110, the National Natural Science Foundation of China (Grant No.11174282), the Key Fund for the“Western Light”Talent Cultivation Plan of the Chinese Academy of Sciences (Grant No.180(201), the Fund for the Scientific and Technical Innovation“Cross and Cooperation Team”of the Chinese Academy of Sciences (Grant No.119(2012)), and the open fund of the State Key Laboratory of Transient Optics and Photonics, China
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