Establishing High-Fidelity Entanglement in Quantum Repeater Chains

Entanglement is crucial for many applications such as quantum computing, quantum sensing, and quantum communication. Establishment of entanglement between remote nodes, referred to as remote entanglement establishment (REE), is a key element of the quantum internet. This paper develops a theoretical...

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Bibliographic Details
Published in:IEEE journal on selected areas in communications 2024-07, Vol.42 (7), p.1763-1778
Main Authors: Liu, Zhenyu, Marano, Stefano, Win, Moe Z.
Format: Article
Language:English
Subjects:
Accuracy
Chain entanglement
Distillation
entanglement distillation
Entanglement distribution
entanglement swapping
Internet
Nodes
Quantum channels
Quantum computing
Quantum entanglement
quantum networks
Quantum state
Qubit
Remote sensing
Repeaters
Terminology
Upper bound
Upper bounds
Vectors
Citations: Items that this one cites
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Summary:Entanglement is crucial for many applications such as quantum computing, quantum sensing, and quantum communication. Establishment of entanglement between remote nodes, referred to as remote entanglement establishment (REE), is a key element of the quantum internet. This paper develops a theoretical framework for establishing high-fidelity entanglement between two remote nodes of a quantum repeater chain via entanglement generation, distillation, and swapping operations. In particular, an upper bound on the optimal REE rate under minimum fidelity requirements is established, and an REE policy that achieves such a bound asymptotically is presented. Results in this paper provide guidelines for protocol design in the quantum internet.
ISSN:0733-8716
1558-0008
DOI:10.1109/JSAC.2024.3380092