Experimental preparation of two-photon Knill-Laflamme-Milburn states

被引：18
|
作者：
Lemr, Karel [1 ,2 ]
Cernoch, Antonin [1 ,2 ]
Soubusta, Jan [1 ,2 ]
Fiurasek, Jaromir [3 ]
机构：
[1] Palacky Univ, Joint Lab Opt, Olomouc 77907, Czech Republic
[2] Acad Sci Czech Republ, Inst Phys, Olomouc 77907, Czech Republic
[3] Palacky Univ, Dept Opt, Olomouc 77146, Czech Republic
来源：
PHYSICAL REVIEW A | 2010年 / 81卷 / 01期
关键词：
QUANTUM COMPUTATION;
D O I：
10.1103/PhysRevA.81.012321
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report an experimental preparation of the so-called Knill-Laflamme-Milburn states (KLM states) that have been known to have interesting properties related to quantum information processing. Our experiment has demonstrated successful preparation of entangled two-photon four-mode KLM states using spontaneous parametric down-conversion as a source of entangled photon pairs, linear optical components, and avalanche photodiodes for single-photon detection. We have verified the successful generation of KLM states by complete quantum state tomography.
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页数：4
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