Long-distance distribution of telecom energy-time entanglement generated on a silicon chip
Abstract
Entanglement distribution is a critical technique that enables numerous quantum applications. Most fiber-based long-distance experiments reported to date have utilized photon pair sources generated in bulk optical crystals, with the entanglement encoded in the polarization degree of freedom. Here, we create energy-time entanglement for photon pairs generated from an on-chip silicon ring resonator via spontaneous four-wave mixing process and report the distribution of the entanglement over standard optical fiber with distance >81 km. Our work paves the way for future large-scale quantum networks with connect of distant quantum nodes.
Fields of Study & Subjects
Quantum Information and Cryptography
Quantum optics and atomic interactions
Semiconductor Quantum Structures and Devices
Publication details
- Journal / source
- Chip
- Volume
- 5
- Issue
- 4
- Pages
- 100198–100198
- Publication date
- 18 February 2026
- Language
- EN