Related Experiment Video
Updated: Feb 5, 2026

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
Published on: February 28, 2016
Field implementation of long-distance quantum key distribution over aerial fiber with fast polarization feedback
Abstract:
Quantum key distribution with polarized qubits has not yet been realized over the aerial fiber, due to rapid polarization changes. Here, we report our recent work towards quantum communication through an aerial fiber channel. We designed a fast polarization feedback module featuring high efficiency, fast speed, and good stability. With this module, we implemented long-distance quantum key distribution over different types of aerial fiber links based on polarization encoding. Our work takes a significant step towards the application of quantum communications in complex environments.
Related Concept Videos
Quantum Numbers
The Quantum-Mechanical Model of an Atom
Feedback Inhibition
Molecular Shape and Polarity
Short-distance Transport of Resources
Distance Problem

