Evidence for entanglement and full tomographic analysis of Bell states in a single-neutron system
2007; American Physical Society; Volume: 76; Issue: 5 Linguagem: Inglês
10.1103/physreva.76.052108
ISSN1538-4446
AutoresYuji Hasegawa, Rudolf Loidl, G. Badurek, Stefan Filipp, Jürgen Klepp, Helmut Rauch,
Tópico(s)Quantum Information and Cryptography
ResumoTomographic 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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