Quantum information: Applications of entanglement

Project funded by Swedish Research Council (Project grant), grant 2008-05142_VR. Participating organisations named by the source: KTH, Royal Institute of Technology. Funded amount: SEK 2,292,000, as stated by the source. Runs 2009-01-01 to 2011-12-31. Keywords: Oklassificerat, Unclassified. Source: OpenAIRE Graph, from the funder's project data (collected by OpenAIRE on 2025-12-05); national funding data, not CORDIS. Abstract given by the source: I seek a continuation of the VR-project “Quantum information: Multipartite entanglement”. The quantum information field is a flourishing field of interdisciplinary research, combining elements of quantum physics, computer science, information theory and atomic and molecular physics. It is presently moving towards larger systems and many-qubit applications, implying multipartite entanglement. In order to implement such systems using photons, two major problems have to be addressed; Decoherence and the weak interaction between photonic qubits. The remedy for the first problem is quantum error correction. We will focus on the issues of efficiency of codes, in particular channel and carrier adapted codes, and the possibility and efficiency of block coding. Presently these areas have received little attention although they appear central for the field to reach its full potential. We will also investigate hyperentanglement, e.g., entanglement in more than one degree of freedom to alleviate the need for nonlinear interaction. Presently only hyperentangled Bell-states have been discussed in the literature and experimentally demonstrated, showing that hyperentanglement will enable one to make a complete Bell-state analyzer without having to incorporate a CNOT-gate (or a similar non-linear, reversible gate). We hope to demonstrate other uses of photonic hyperentanglement since the generation of hyperentangled states is considerably easier than the implementation of CNOT-gates.

Original source.

Source: OpenAIRE Graph: projects of national funders, OpenAIRE, from the project data of Swedish Research Council. Retrieved 2026-10-28. 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 "Quantum information: Applications of entanglement" was funded by the Swedish Research Council with a grant of SEK 2,292,000, running from January 1, 2009, to December 31, 2011, involving KTH, Royal Institute of Technology. Suggested technology pillar: computing. Generated by AI from the public source text; it may contain errors and the original source is authoritative.