Evidence for entanglement and full tomographic analysis of Bell states in a single-neutron system

被引：26
作者：
Hasegawa, Yuji
Loidl, Rudolf
Badurek, Gerald
Filipp, Stefan
Klepp, Juergen
Rauch, Helmut
机构：
[1] Osterreichischen Univ, Inst Atom, A-1020 Vienna, Austria
[2] Japan Sci & Technol Agcy, PRESTO, Kawaguchi, Saitama, Japan
[3] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France
来源：
PHYSICAL REVIEW A | 2007年 / 76卷 / 05期
关键词：
D O I：
10.1103/PhysRevA.76.052108
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Tomographic measurements of Bell states of a single-neutron system in an interferometer were carried out. The spin-path joint measurements exhibit clear evidence of entanglement. Reconstructions of the density matrices of, practically complete, Bell states were accomplished. The fidelities as well as the concurrences of the generated states are determined by 0.79 and 0.75 as well as 0.59 and 0.52, respectively, which are again clear evidence of the spin-path entanglement in a single-neutron system.
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页数：6
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