Implementation of high dimensional quantum states for practical quantum communication

Project funded by Fundação para a Ciência e a Tecnologia, I.P. (FCT), grant 2024.01028.BD. Runs 2025-02-01 to 2027-08-31. Source: OpenAIRE Graph, from the funder's project data (collected by OpenAIRE on 2026-06-25); national funding data, not CORDIS. Abstract given by the source: This research project aims to develop experiments and harness the potential of high-dimensional quantum states (qudits) of light. The main objectives are to use optical systems using for example, Spatial Light Modulators or Intefermoters to generate qudits, d-dimensional quantum systems, of light and then apply self-testing methods to certify key properties, such as dimension and entanglement. The next work phase consists of studying qudits under practical communication constraints such as turbulent free-space and optical fibers. Qudits are useful in making the quantum communication system more robust against channel noise and imply weaker experimental requirements on the efficiency of single-photon detectors. Moreover, a new quantum communication protocol will be proposed based on high-dimensional quantum states that consider practical constraints. This will involve a theoretical exploration of security proofs for quantum communication protocols.

Original source.

Source: OpenAIRE Graph: projects of national funders, OpenAIRE, from the project data of Fundação para a Ciência e a Tecnologia, I.P. (FCT). Retrieved 2026-10-22. 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 FCT, runs from February 2025 to August 2027, focusing on high-dimensional quantum states for communication. It aims to develop experiments using optical systems to generate qudits and study their application under practical constraints. Suggested technology pillar: communication. Generated by AI from the public source text; it may contain errors and the original source is authoritative.