Quantum sensing: the next frontier in sensor performance

Quantum sensors rely on the unique properties of matter and light at the smallest scales. The programme is currently investigating and evaluating several sensor types to identify how they can be used in Earth observation. These include:

• cold atom accelerometery

• nitrogen-vacancy and alkali vapour magnetometers, which detect changes in magnetic fields using quantum states in diamond or atomic vapours

• Rydberg atom sensors that probe electric fields and microwave radiation

• levitated nanoparticles suspended in optical or electromagnetic traps to measure minute forces

• quantum light sources that could enable unique optical detection techniques

By involving Earth observation science needs early, ESA is already exploring how they could help answer key questions from the Earth observation Science Strategy, such as monitoring atmospheric composition or magnetic and radiative processes.

According to ESA’s Aaron Tilmann Strangfeld, JP in Quantum Sensing Technology, collaboration across communities will be vital for harnessing this technology for future Earth-sensing missions. He said, “Quantum laboratories bring frontier knowledge while Earth observation scientists bring a deep understanding of environmental processes and systems engineers ensure feasibility in the harsh realities of space. To truly accelerate progress, FutureEO wants to help these communities work together now to guide innovation toward real-world impact.”