Phys. Rev. Lett. 91, 147901 (2003) [4 pages]Proposal for Production and Detection of Entangled Electron-Hole Pairs in a Degenerate Electron Gas
See accompanying Physics Focus We demonstrate theoretically that the shot noise produced by a tunnel barrier in a two-channel conductor violates a Bell inequality. The nonlocality is shown to originate from entangled electron-hole pairs created by tunneling events—without requiring electron-electron interactions. The degree of entanglement (concurrence) equals 2(T1T2)1/2(T1+T2)-1, with T1,T2≪1 the transmission eigenvalues. A pair of edge channels in the quantum Hall effect is proposed as an experimental realization. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.91.147901
DOI:
10.1103/PhysRevLett.91.147901
PACS:
03.67.Mn, 03.65.Ud, 73.43.Qt, 73.50.Td
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