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Title: Entanglement percolation with bipartite mixed states
Authors: Broadfoot, S.
Dorner, U.
Jaksch, D. 
Issue Date: 2009
Source: Broadfoot, S., Dorner, U., Jaksch, D. (2009). Entanglement percolation with bipartite mixed states. EPL 88 (5) : -. ScholarBank@NUS Repository.
Abstract: We develop a concept of entanglement percolation for long-distance singlet generation in quantum networks with neighboring nodes connected by partially entangled bipartite mixed states. We give a necessary and sufficient condition on the class of mixed network states for the generation of singlets. States beyond this class are insufficient for entanglement percolation. We find that neighboring nodes are required to be connected by multiple partially entangled states and devise a rich variety of distillation protocols for the conversion of these states into singlets. These distillation protocols are suitable for a variety of network geometries and have a sufficiently high success probability even for significantly impure states. In addition to this, we discuss possible further improvements achievable by using quantum strategies including generalized forms of entanglement swapping. © Europhysics Letters Association.
Source Title: EPL
ISSN: 02955075
DOI: 88/50002
Appears in Collections:Staff Publications

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