Quantum sensor for diagnostics in the brain In the Nano-Argovia project QSBI, researchers In the Nano-Argovia project QSBI, an interdisciplinary research plan to use nitrogen vacancy centers in dia- team has started to investigate the use of quantum sensors monds to optimize magnetic encephalography. (Image: PSI) based on nitrogen-vacancy (NV) centers in diamonds to study brain activity. The NV centers can be used to detect the weak magnetic 昀椀elds of the brain. The team plans to use the project to optimize the existing method of magnetoencephalography and to develop an algorithm so that a three-dimensional map “We believe that due to of brain activity can be created from the measurement data. their combination of robust The researchers are in the process of improving the signal- operation, easy logistics and to-noise ratio of the signals generated by the NV centers by high sensitivity, NV diamond applying a nanopattern of photonic crystals on the diamond magnetometers will surface. They have also started to develop machine learning revolutionize biomagnetism.” algorithms that can process the data and eventually lead to the Dr. Tobias Sjölander, reconstruction of a 3D brain activity map with high accuracy Quantum Engineer at Qnami AG and robustness. Cooperation with: Qnami AG // Paul Scherrer Institute // CSEM Allschwil Project description: https://bit.ly/47BuEFD 38 SNI Annual Report 2023