Enhancement of Entanglement Percolation in Quantum Networks via Lattice Transformations
| Autor: | Jan Wehr, Maciej Lewenstein, G. John Lapeyre |
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| Rok vydání: | 2008 |
| Předmět: |
Physics
LOCC Quantum network Quantum Physics TheoryofComputation_GENERAL FOS: Physical sciences Quantum entanglement Data_CODINGANDINFORMATIONTHEORY Squashed entanglement 01 natural sciences Multipartite entanglement Atomic and Molecular Physics and Optics 010305 fluids & plasmas Qubit Lattice (order) Quantum mechanics 0103 physical sciences Statistical physics W state 010306 general physics Quantum Physics (quant-ph) |
| Zdroj: | Physical Review A |
| DOI: | 10.48550/arxiv.0807.1118 |
| Popis: | We study strategies for establishing long-distance entanglement in quantum networks. Specifically, we consider networks consisting of regular lattices of nodes, in which the nearest neighbors share a pure, but non-maximally entangled pair of qubits. We look for strategies that use local operations and classical communication. We compare the classical entanglement percolation protocol, in which every network connection is converted with a certain probability to a singlet, with protocols in which classical entanglement percolation is preceded by measurements designed to transform the lattice structure in a way that enhances entanglement percolation. We analyze five examples of such comparisons between protocols and point out certain rules and regularities in their performance as a function of degree of entanglement and choice of operations. Comment: 12 pages, 17 figures, revtex4. changes from v3: minor stylistic changes for journal reviewer, minor changes to figures for journal editor |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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