Second-order superposition operations via Hong-Ou-Mandel interference

被引：41
|
作者：
Lee, Su-Yong [1 ]
Nha, Hyunchul [1 ,2 ]
机构：
[1] Texas A&M Univ Qatar, Dept Phys, Doha, Qatar
[2] Univ Ulm, Inst Quantenphys, D-89069 Ulm, Germany
来源：
PHYSICAL REVIEW A | 2012年 / 85卷 / 04期
关键词：
PHOTONS; ENTANGLEMENT; RECONSTRUCTION; SCHEME; STATES;
D O I：
10.1103/PhysRevA.85.043816
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We propose an experimental scheme to implement a second-order nonlocal superposition operation (a) over cap (dagger 2) + e(i phi)(b) over cap (dagger 2) and its variants by way of Hong-Ou-Mandel interference. The second-order coherent operations enable us to generate a NOON state with high particle number in a heralded fashion and also can be used to enhance the entanglement properties of continuous variable states. We discuss the feasibility of our proposed scheme considering realistic experimental conditions such as on-off photodetectors with nonideal efficiency and imperfect single-photon sources.
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页数：5
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