Average concurrence and entanglement swapping
arXiv:2106.00848 · doi:10.1103/PhysRevA.104.022425
Abstract
We study the role of average concurrence in entanglement swapping in quantum networks. We begin with qubit pure states, and there is a very simple rule governing the propagation of average concurrence in multiple swaps. We look at examples of mixed qubit states, and find the relation for pure states gives an upper bound on what is possible with mixed states. We then move on to qudits, where we make use of the I-concurrence. Here the situation is not as simple as for qubits, but in some cases relatively straightforward results can be obtained.
Comments welcome
References in corpus (18)
- Long-distance quantum communication with atomic ensembles and linear optics
- Universal state inversion and concurrence in arbitrary dimensions
- A Multiparticle Generalization of Entanglement Swapping
- Efficient long distance quantum communication
- Purification via entanglement swapping and conserved entanglement
- Experimental Nonlocality Proof of Quantum Teleportation and Entanglement Swapping
- The Entanglement of Formation for Isotropic States
- Long distance entanglement swapping with photons from separated sources
- Quantum repeaters with imperfect memories: cost and scalability
- Entanglement Distribution in Pure-State Quantum Networks
- Entanglement swapping of noisy states: A kind of superadditivity in nonclassicality
- Remote Preparation and Distribution of Bipartite Entangled States
- Entanglement Swapping Chains for General Pure States
- Entanglement Swapping of Two Arbitrarily Degraded Entangled States
- Entanglement swapping between multi-qudit systems
- Increasing singlet fraction with entanglement swapping
- Nonlocality activation in entanglement swapping chains
- Violation of Clauser-Horne-Shimony-Holt inequality for states resulting from entanglement swapping
Cited by in corpus (7)
- Swapping of quantum correlations and the role of local filtering operations
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- Entanglement distribution in quantum networks via swapping of partially entangled pure states
- Multipath entanglement purification strategies for quantum networks
- End-to-end entanglement of quantum network paths with multi-parameter states
- Optimal resource requirements for connected quantum sub-networks
- Entanglement swapping for partially entangled qudits and the role of quantum complementarity