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Entanglement routing via passive optics in CV-networks.

David Fainsin1, Antoine Debray1, Ilya Karuseichyk1

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This study introduces an entanglement routing protocol for quantum networks. It enables secure teleportation channels between clients using passive optics and complex network structures.

Keywords:
Continuous variablesQuantum communicationsQuantum informationQuantum opticsRouting

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Area of Science:

  • Quantum Information Science
  • Quantum Networking
  • Quantum Optics

Background:

  • Large-scale quantum networks necessitate efficient path sorting for node communication.
  • Entanglement routing is crucial for establishing quantum links in complex networks.

Purpose of the Study:

  • To develop a bipartite routing protocol for establishing quantum teleportation channels.
  • To analyze entanglement routing in continuous-variable graph states mimicking real-world networks.

Main Methods:

  • Construction of continuous-variable graph states using finite squeezing and passive linear optics.
  • Development of a bipartite routing protocol for client-to-client teleportation.
  • Application of a derandomised evolutionary algorithm to study complex network topologies.

Main Results:

  • Criteria for extracting a quantum teleportation channel were established.
  • The protocol successfully demonstrates entanglement routing in complex graph structures.
  • The framework was extended to analyze intricate network topologies.

Conclusions:

  • The developed protocol offers an efficient method for entanglement routing in large-scale quantum networks.
  • This work provides a pathway for establishing secure quantum communication channels via passive optical networks.