Polarization-Maintaining Fiber Fusion Splicer: A Key Tool for Continuous-Variable Quantum Technology based on Light

Project funded by Carlsberg Foundation (Research Infrastructure), grant CF22-0955. Participating organisations named by the source: DTU Technical University of Denmark. Runs n/a to 2023-12-30. Source: OpenAIRE Graph, from the funder's project data (collected by OpenAIRE on 2025-09-09); national funding data, not CORDIS. Abstract given by the source: Quantum technology promises faster computation, more secure communication and more sensitive measurements. This so-called quantum advantage can among others be achieved using squeezed light as a resource. Squeezed light is light with less (phase or amplitude) noise than the light emitted by the best laser that can ever be built. To achieve quantum advantage in computation, secure communication and sensitive measurements fiber optic networks have to be build with the lowest amount of optical loss possible because squeezed light degrades with optical loss. A polarization-maintaining fiber fusion splicer can achieve this by carefully aligning fibers and welding (splicing) them together. The infrastructure will therefore enable breakthrough experiments eventually to the benefit of society.What? Why? How?

Original source.

Source: OpenAIRE Graph: projects of national funders, OpenAIRE, from the project data of Carlsberg Foundation. Retrieved 2026-11-02. Licence: Creative Commons Attribution 4.0 (OpenAIRE Graph). Selected metadata, adapted presentation; the publisher's record is authoritative. No endorsement by the source is implied. Licence: Creative Commons Attribution 4.0 (CC BY 4.0).

AI-assisted summary: The project, funded by the Carlsberg Foundation, focuses on a polarization-maintaining fiber fusion splicer essential for advancing continuous-variable quantum technology. It aims to enhance fiber optic networks to minimize optical loss, thereby improving quantum applications. Suggested technology pillar: enabling. Generated by AI from the public source text; it may contain errors and the original source is authoritative.