Probing Quantitatively Two-electron Entanglement with a Spintronic Quantum Eraser
Mesoscale and Nanoscale Physics
2015-06-05 v1
Abstract
We design an ingenious spintronic quantum eraser to quantitatively probe the two-electron entanglement. It is shown that the concurrence of two spin-entangled electrons is directly given by the Aharonov-Bohm oscillation amplitude of the Fano factor, a measurable current-current correlation, making it rather promising to experimentally quantify the two-electron entanglement. The singlet and triplet entangled states are distinguished by the opposite signs in the Fano factor. Since the main building blocks in the designed setup, an electronic Mach-Zehnder interferometer and a spin filter, have already been implemented, our proposal is particularly pertinent to experiments.
Cite
@article{arxiv.1207.5865,
title = {Probing Quantitatively Two-electron Entanglement with a Spintronic Quantum Eraser},
author = {W. Chen and R. Shen and Z. D. Wang and L. Sheng and B. G. Wang and D. Y. Xing},
journal= {arXiv preprint arXiv:1207.5865},
year = {2015}
}