Entangled photon generation in two-period quasi-phase-matched parametric down-conversion
Entangled photon generation in two-period quasi-phase-matched parametric down-conversion
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DOI：
10.1364/oe.20.005508
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发表时间：
2012-02-27
期刊：
影响因子：
3.8
通讯作者：
Edamatsu, Keiichi
中科院分区：
文献类型：
--
作者：
Ueno, Wakana;Kaneda, Fumihiro;Edamatsu, Keiichi
我们提出并证明了一个简单但确定性的方案，用于产生偏振纠缠光子对在电信波长与II型准相位匹配自发参量下转换（QPM-SPDC）具有两个极化周期。我们制作了具有两个极化周期的LiNbO 3晶体，以产生两个波长的纠缠光子，即，1506 nm和1594 nm。利用态层析技术对双光子偏振态进行了表征，证实了该态是高度纠缠的。(C)2012美国光学学会
We proposed and demonstrated a simple but deterministic scheme for generating polarization-entangled photon pairs at telecommunication wavelengths with type-II quasi-phase-matched spontaneous parametric down-conversion (QPM-SPDC) having two poling periods. We fabricated a LiNbO3 crystal having two poling periods so as to generate entangled photons at two wavelengths, i.e., 1506 nm and 1594 nm. We characterized the two-photon polarization state with state tomography and confirmed that the state was highly entangled. (C) 2012 Optical Society of America