Taming the noise: Characterizing the dynamics of open quantum systems

Project funded by Carlsberg Foundation (Reintegration Fellowships), grant CF22-0727. Participating organisations named by the source: KU University of Copenhagen. Runs n/a to 2024-11-29. 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 goal of the project is to develop more efficient and accurate approximations for modelling the effects of quantum noise. Quantum noise is the uncontrolled influence from the surrounding environment that inevitably affects a microscopic system of interest, such as an atom or electrons in a solid. On these microscopic scales, the laws of nature appear fundamentally different from how we perceive them in our everyday lives – rather than Newton’s laws, nature obeys the laws of quantum mechanics. These laws are formulated for isolated systems, and only approximate methods exist for describing the effects of quantum noise on a physical system. Why? Several scientific challenges of the 21st century require better methods for modelling the effects of quantum noise. New tools are for instance needed to develop more efficient photovoltaics, understand the mechanism of photosynthesis, and develop scalable platforms for quantum information processing. Today’s standard methods for modelling quantum noise were developed in the middle of the 20th century for simple quantum systems such as individual atoms or nuclei. While successful for the scientific problems studied at the time, these methods fail when applied to complex quantum systems that we encounter today. How? Recently, my collaborators and I developed a new approach to modelling quantum noise, which can be applied to far more complex systems than historical approaches. Our method significantly improves the efficiency at which one can describe the effects of quantum noise on systems weakly coupled to their environment. In this project, I seek to generalize our approach to the important, but challenging, case of strong coupling. While this problem has been studied extensively, the success of our method in the weak-coupling regime indicates a significant potential for further progress by applying our approach here. As a secondary line of study, I will seek to gain new insights by applying our new method to current [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 "Taming the noise: Characterizing the dynamics of open quantum systems" is funded by the Carlsberg Foundation and aims to develop better approximations for modeling quantum noise effects. It involves KU University of Copenhagen and runs until November 29, 2024. Suggested technology pillar: simulation. Generated by AI from the public source text; it may contain errors and the original source is authoritative.