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Heriot-Watt Fuses Two Quantum Networks, Teleports Entanglement in Eight-User Demo

The lab-scale prototype uses a sub-£100 commercial fiber to function as a programmable entanglement router within the UK’s IQN Hub.

A team at Heriot-Watt University has unveiled a prototype quantum network that merges two independent networks into one reconfigurable, eight-user system. The setup can route, distribute, and even teleport entanglement between users on demand.

Overview

  • A peer-reviewed paper in Nature Photonics reports the first linkage of two independent quantum subnetworks into one reconfigurable, eight-user system.
  • The network routes and distributes entanglement on demand and supports multiplexing so multiple users can share a single fiber concurrently.
  • The team demonstrated multiplexed entanglement teleportation by swapping entanglement between four distant users across two channels simultaneously.
  • Researchers programmed an off-the-shelf optical fiber costing under £100 by shaping input light to exploit internal scattering as a high-dimensional optical circuit.
  • The Heriot-Watt–led effort, part of the EPSRC-funded Integrated Quantum Networks Hub, is presented as a scalable step toward interconnecting many smaller quantum processors.