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Towards a Global Scale Quantum Information Network: A Study Applied to Satellite-Enabled Distributed Quantum

Laurent de Forges de Parny1, Luca Paccard1, Mathieu Bertrand1

  • 1Thales Alenia Space, 26, Avenue J-F Champollion, 31037 Toulouse, France.

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Summary
This summary is machine-generated.

This study demonstrates a satellite-based quantum network for distributed quantum computing, enabling entanglement distribution between Paris and Nice. The system achieved 90 entangled photon pairs, facilitating quantum operations with 82% fidelity.

Keywords:
distributed quantum computingquantum information networkssatellite quantum communications

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Area of Science:

  • Quantum Information Science
  • Distributed Quantum Computing
  • Satellite Quantum Networks

Background:

  • Small quantum processors offer a scalable solution to the qubit manipulation challenge in quantum computing.
  • Interconnecting quantum registers via networks is crucial for distributed quantum computing applications.

Purpose of the Study:

  • To propose and assess a satellite-enabled distributed quantum computing system at the French national scale.
  • To evaluate the feasibility of distributing entanglement between ground stations using a space segment.
  • To analyze the potential for quantum teleportation and gate teleportation using the generated entanglement.

Main Methods:

  • Development of a system model including ground and space segments.
  • Numerical assessment of entanglement distribution rate and fidelity.
  • Simulation of end-to-end entanglement distribution between Paris and Nice using trapped-ion processors.

Main Results:

  • Distribution of 90 end-to-end entangled photon pairs over a 331-second satellite pass.
  • Achieved a maximum fidelity of 82% for a teleportation-based controlled-Z operation.
  • Demonstrated the feasibility of a satellite-based quantum information network for distributed quantum computing.

Conclusions:

  • Satellite-enabled quantum networks are viable for distributing entanglement over national scales.
  • The proposed system can support quantum teleportation and gate teleportation for distributed quantum computing.
  • Further development can enhance entanglement distribution rates and fidelity for practical applications.