Randomly poled nonlinear crystals as a source of photon pairs

被引：7
|
作者：
Perina, Jan, Jr. [1 ]
Svozlik, Jiri [2 ]
机构：
[1] Inst Phys ASCR, Joint Lab Opt, Olomouc 77207, Czech Republic
[2] Palacky Univ, RCPTM, Joint Lab Opt, Olomouc 77146, Czech Republic
来源：
PHYSICAL REVIEW A | 2011年 / 83卷 / 03期
关键词：
DOWN-CONVERSION; GENERATION; DISPERSION; LIGHT;
D O I：
10.1103/PhysRevA.83.033808
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The generation of photon pairs from randomly poled nonlinear crystals is investigated using an analytically soluble model and numerical calculations. Randomly poled crystals are discovered as sources of entangled ultra broadband signal and idler fields. Their photon-pair generation rates scale linearly with the number of domains. Entanglement times as short as several fs can be reached. A comparison with chirped periodically poled structures is given and reveals close similarity.
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页数：14
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