期刊
PHYSICS LETTERS A
卷 373, 期 21, 页码 1823-1825出版社
ELSEVIER
DOI: 10.1016/j.physleta.2009.03.051
关键词
Quantum physics; Entanglement concentration; Electrons; Charge detection; Quantum computation
资金
- National Natural Science Foundation of China [10604008]
- National Excellent Doctoral Dissertation of China [200723]
- Beijing Natural Science Foundation [1082008]
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. (C) 2009 Elsevier B.V. All rights reserved.
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