New Bell state analyser for photonic integrated circuits
Entanglement-sharing technology enables scalable quantum networks via integrated photonics.
Sharing entanglement across networks is a key requirement for long range quantum computing and networks. Current Bell state analysers require optical polarisations to be conserved, which is challenging for photonic integrated circuits. The Oxford invention is easily implemented in photonic integrated circuits.
Applications: Quantum networks, quantum computing, communication networks
| Features | Benefits |
|---|---|
| Bell state analyser swaps quantum entanglement of photons | Enables long range quantum communication and networks |
| Unlike previous Bell state analysers, different optical polarisations travel through different paths | Analyser can be produced as photonic integrated circuit, avoiding bulky optics |
| Well-proven photonic integrated circuit technology | Volume manufacture of high-performance, stable and compact units |
| Scalable to entangle multiple nodes. Examples of 3 and 4 node systems shown above | Enables complex quantum networks and distributed quantum computers |
| Systems can entangle fewer nodes (e.g. 4 node system entangles 3 nodes) without needing physical reconfiguration |
Patented and Available For
- Co-development
- Consulting
- Licensing