Abstract
We present a simple protocol to purify bipartite entanglement in spin-1/2 particles by utilizing only natural spin-spin interactions and Sz-measurements on single spins. It is shown that only one switching on (and off) of a multi-spin interaction, as well as single spin operations, is sufficient for purify entanglement. This approach significantly reduces the number of controls that would induce errors compared with conventional purification protocols and it could be useful for quantum information processing in solid-state-based systems.
© 2008 Optical Society of America
PDF ArticleMore Like This
Jian-Wei Pan, Christoph Simon, Caslav Brukner, and Anton Zeilinger
PPE319 The European Conference on Lasers and Electro-Optics (CLEO/Europe) 2001
Ying Yang, Yuping Xu, and Shiqun Zhu
QMI33 International Conference on Quantum Information (QIM) 2011
Aram W. Harrow and Debbie W. Leung
QWC1 International Conference on Quantum Information (QIM) 2008