Universal Greenberger-Horne-Zeilinger-state analyzer based on two-photon polarization parity detection

被引：15
|
作者：
Qian, J
Feng, XL
Gong, SQ [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
[3] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore
[4] CCAST, World Lab, Beijing 100080, Peoples R China
来源：
PHYSICAL REVIEW A | 2005年 / 72卷 / 05期
关键词：
D O I：
10.1103/PhysREvA.72.052308
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present a universal analyzer for the three-particle Greenberger-Horne-Zeilinger (GHZ) states with quantum nondemolition parity detectors and linear-optics elements. In our scheme, all of the three-photon GHZ states can be discriminated with nearly unity probability in the regime of weak nonlinearity feasible at the present state of the art experimentally. We also show that our scheme can be easily extended to the analysis of the multi-particle GHZ states.
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页数：3
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