Elsevier, Physics Letters A, 21(373), p. 1823-1825
DOI: 10.1016/j.physleta.2009.03.051
Full text: Download
We present an entanglement concentration protocol for electrons based on their spins and their charges. The combination of an electronic polarizing beam splitter and a charge detector functions as a parity check device for two electrons, with which the parties can reconstruct maximally entangled electron pairs from those in a less-entanglement state nonlocally. This protocol has a higher efficiency than those based on linear optics and it does not require the parties to know accurately the information about the less-entanglement state, which makes it more convenient in a practical application of solid quantum computation and communication. ; Comment: 4 pages, 2 figures