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A large-scale reconfigurable multiplexed quantum photonic network.

Natalia Herrera Valencia1, Annameng Ma1, Suraj Goel1

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|February 9, 2026
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Summary
This summary is machine-generated.

Researchers developed a prototype global quantum network. This flexible, multiplexed network enables entanglement distribution between multiple users across interconnected local networks, advancing quantum communication and computing.

Keywords:
Quantum informationQuantum optics

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Area of Science:

  • Quantum Information Science
  • Quantum Networking
  • Photonics

Background:

  • Quantum networks are crucial for quantum-secured communications, distributed quantum computing, and sensing.
  • Future networks require dense, reconfigurable, and multiplexed entanglement sharing for multiple users.
  • Establishing global networks by interconnecting local networks via entanglement swapping remains a challenge.

Purpose of the Study:

  • To demonstrate a prototype global reconfigurable quantum network.
  • To enable flexible and multiplexed entanglement routing and teleportation between local networks.
  • To overcome limitations of existing planar and integrated photonic platforms for global quantum networks.

Main Methods:

  • Developed a programmable 8x8-dimensional multi-port circuit utilizing mode-mixing in multi-mode fiber.
  • Implemented on-demand, high-dimensional operations on photons carrying eight transverse-spatial modes.
  • Demonstrated entanglement routing and teleportation between two local four-user networks.

Main Results:

  • Successfully created a prototype global reconfigurable quantum network architecture.
  • Showcased flexible and multiplexed entanglement distribution between two distinct local networks.
  • The novel circuit design bypasses conventional integrated photonic platform challenges.

Conclusions:

  • This work represents a significant step towards large-scale, global quantum networks.
  • The demonstrated architecture offers versatile connectivity and is compatible with existing infrastructure.
  • Highlights the potential of multi-mode fiber and high-dimensional photonics for future quantum networks.