With unprecedented precision, quantum sensors are viewed as a technological leap for biomedicine. More and more start-ups are working to bring this potential out of the research lab into medical application. But it is often difficult to predict the success of commercialisation for individual technologies. Scientists from Harvard University (USA) and QuantumFrontiers-scientists from TU Braunschweig jointly compiled an overview of various quantum sensors and how they can be used. They published an interdisciplinary and application-oriented article in the journal Nature Review Physics.