Continuous Quantum Correlations for Secure Information Processing

Project funded by Carlsberg Foundation (Semper Ardens: Accelerate), grant CF19-0313. Participating organisations named by the source: DTU Technical University of Denmark. Runs n/a to 2023-08-14. Source: OpenAIRE Graph, from the funder's project data (collected by OpenAIRE on 2026-07-23); national funding data, not CORDIS. Abstract given by the source: What? The behaviour of light and matter is ultimately governed by quantum physics which often runs counter to everyday experience and can defy classical notions of cause and effect. This represents a striking departure from classical physics and is central to the foundations of modern physics. At the same time, the lack of any classical causal explanation means that quantum events can be truly random, which enables novel information processing with security based directly on laws of nature. This project will explore quantum correlations in continuous degrees of freedom, which are not yet well understood. The goal is to advance our fundamental understanding of quantum physics as well as to develop ultra-secure information processing and communication. Why? Understanding continuous quantum correlations will both provide new insight into fundamental physics and enable new protocols for cryptography in the so-called device-independent setting, where strong security guarantees can be made under minimal assumptions. Quantum correlations have been extensively studied in discrete settings with separate, distinct states, like the 0s and 1s of a digital computer. Much less is known about continuous quantum correlations, even though continuous systems play a vital role throughout physics. At the same time, many quantum states and measurements available in the lab are of a continuous nature. Device-independent protocols tailored to continuous degrees of freedom may therefore offer significant advantages in terms of speed and ease of implementation. How? We will pursue three complementary lines of research: We will explore the fundamental structure of continuous quantum correlations, building on existing methods for discrete correlations to develop new mathematical tools and pinpoint what makes a continuous correlation genuinely quantum. We will explore generation of random numbers, as randomness is central to information security. And, using our new insight, we will develop [shortened; the full text is on the OpenAIRE page]

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 "Continuous Quantum Correlations for Secure Information Processing" is funded by the Carlsberg Foundation and involves DTU Technical University of Denmark. It aims to explore quantum correlations to enhance understanding of quantum physics and develop secure information processing. Suggested technology pillar: enabling. Generated by AI from the public source text; it may contain errors and the original source is authoritative.