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

Yuji Hasegawa; Rudolf Loidl; Gerald Badurek; Stefan Filipp; Jürgen Klepp; Helmut Rauch

doi:10.1103/PhysRevA.76.052108

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

Yuji Hasegawa, Rudolf Loidl, Gerald Badurek, Stefan Filipp, Jürgen Klepp, Helmut Rauch

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27 Scopus citations

Abstract

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.

Original language	English
Article number	052108
Journal	Physical Review A
Volume	76
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevA.76.052108
State	Published - 15 Nov 2007
Externally published	Yes

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abstract = "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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AU - Loidl, Rudolf

AU - Badurek, Gerald

AU - Filipp, Stefan

AU - Klepp, Jürgen

AU - Rauch, Helmut

PY - 2007/11/15

Y1 - 2007/11/15

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

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