Non-equilibrium quantum sensing

Measuring small changes in our environment with precision is essential for technologies such as navigation systems, thermometry, and magnetometry. The "Non-equilibrium Quantum Sensing" (NOQUS) project aims to enhance our ability to measure these changes by leveraging the unique properties of quantum systems. Traditional quantum sensing methods often rely on maintaining ideal conditions, such as complete isolation from noise or external interference. While these approaches can achieve remarkable accuracy in tailored laboratory settings, they are often impractical in real-world environments. NOQUS takes a more realistic approach, investigating how quantum systems perform when they interact with their surroundings. By studying these systems in their natural statewhile in contact with their environmentthe project seeks to develop sensors that are robust and reliable, even in noisy or uncontrolled conditions. The project brings together ideas from quantum physics, statistics, and estimation theory to create practical sensing tools. For example, NOQUS focuses on designing new methods for measuring temperature in ultra-cold gases, where traditional techniques can do so at the cost of the hardly prepared ultra-cold gas itself. It also explores ways to detect tiny changes in magnetic fields and other parameters, advancing the capabilities of sensors for a variety of applications. Importantly, the project emphasizes practicality by leveraging existing technologies and ensuring that the proposed methods can be implemented in various experimental setups. Through its focus on both precision and practicality, NOQUS aims to make quantum sensing more accessible and applicable to real-world challenges. The results of this project will enhance our ability to observe and measure the world with greater accuracy.