Entanglement Witnesses from Single-Particle Interference
arXiv:0710.0825 · doi:10.1209/0295-5075/83/60006
Abstract
We describe a general method of realizing entanglement witnesses in terms of the interference pattern of a single quantum probe. After outlining the principle, we discuss specific realizations both with electrons in mesoscopic Aharonov-Bohm rings and with photons in standard Young's double-slit or coherent-backscattering interferometers.
5 pages, 3 figures, epl2, uses pstricks.sty
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