Abstract
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 , with the transmission eigenvalues. A pair of edge channels in the quantum Hall effect is proposed as an experimental realization.
- Received 6 May 2003
DOI:https://doi.org/10.1103/PhysRevLett.91.147901
©2003 American Physical Society