The fascination of quantum sensor technology

What fascinates you personally about quantum sensor technology?

Robert Staacke: Quantum sensor technology makes it possible to develop pioneering technologies and new areas of application that go far beyond the limits of conventional sensor technology. It is particularly impressive that the use of quantum sensors allows us to penetrate areas that previously seemed unattainable. This can be seen, for example, in the significantly increased sensitivity, the miniaturization of the sensors and the reduction in the size of the measuring points. We have made remarkable progress in the last two points in particular. The purely optical control makes it possible to break completely new ground and open up areas of application, such as in the high-voltage range, that were previously not possible. This ability to transcend established boundaries and open up new dimensions is what makes quantum sensor technology so fascinating.

When people think of quantum sensors, they primarily think of laboratories and less of factory and process automation - how do you intend to change that?

Christian Reinwald: The sensor from Quantum Technologies, which has been available in our online store since the beginning of 2024, offers two decisive advantages over the applications traditionally used in laboratories, namely its compactness and robustness. These properties make the sensor a valuable instrument in factory and process automation. Thanks to its compact dimensions, it can be integrated almost anywhere, which significantly increases flexibility in industrial applications. The robustness of the sensor ensures that it works reliably even in demanding environments without the measurement data being distorted by external influences. In addition, it is extremely cost-efficient compared to experimental laboratory applications, which further increases its attractiveness for industrial applications.

What do you expect from quantum sensors for industry?

Robert Staacke: A key focus is on the ability to carry out measurements at points that were previously inaccessible and therefore to realize applications that were previously considered impossible to implement. This leads to improved quality assurance and also enables the development of new products and processes. Extended measurement options offer considerable added value for industry, for example by reducing waste, which can significantly increase efficiency. Another aspect that is attracting great interest in the industry is the miniaturization of sensors. As the sensors function purely optically, there is no need for electrical connections, which is a decisive advantage in many applications.

Do you have to be a quantum physicist to use quantum sensors?

Christian Reinwald: No! The sensors behave similarly to conventional sensors in their application, especially in the current version with the sensor head. The necessary expertise is not limited to in-depth knowledge of quantum physics. An experienced engineer or a tech-savvy DIY enthusiast can easily set up a small setup and use the sensor efficiently without needing specialist knowledge of quantum physics.

What applications are you thinking of for your sensors?

Robert Staacke: At Quantum Technologies, we see great potential in high-voltage measurement technology, as the sensors do not require any electrical components and can therefore be used safely in high-voltage areas. This includes both current sensors and measurements in extreme electrical environments. The sensors are also suitable for non-destructive material testing. Thanks to the integration of materials such as diamond and glass, which are not affected by magnetic fields, even the finest cracks or material defects can be precisely detected. The compactness of the sensors allows them to be used in narrow gaps, for positioning tasks or in areas where traditional sensors could not be used due to their size.

What is special about the technology from Quantum Technologies?

Robert Staacke: Our technology is characterized by its extreme miniaturization, as the sensors can be reduced in size down to 100 µm. Another key feature is the purely optical mode of operation, which enables complete galvanic isolation. This allows precise measurements, for example via fiber optic cables without an electrical connection. With these properties, the sensors are particularly predestined for applications in high-voltage areas, in environments with strong electromagnetic radiation or in extreme temperatures from -273 to 600 °C.

How far along is the development? What products are already available?

Robert Staacke: Our quantum sensors are currently available at Reichelt Elektronik primarily for research and development purposes. These models enable developers to integrate individual measuring heads and use the associated evaluation electronics for detailed analyses. For industrial applications, we develop specialized, tailor-made solutions. These include complete systems in which the electronics can supply several measuring heads simultaneously, for example, or individual components that can be integrated into customer systems. The basic technology remains the same, but the design and integration vary depending on the specific customer requirements and application.

Robert Staacke, Managing Director at Quantum Technologies in Leipzig © Quantum Technologies

How ready are they for the market?

Robert Staacke: The availability via Reichelt Elektronik is an important step in making the technology accessible to a wide audience and establishing initial customer contacts. This enables us to gather valuable feedback and further refine the sensors. At the same time, Quantum Technologies is concentrating on implementing individual customer requirements. Development work is therefore ongoing to ensure that our products meet the requirements and expectations of the industry.