Carl Zeiss Ag

Element Six Technologies Limited

Universität Stuttgart Körperschaft Des Öffentlichen Rechts

Jörg Wrachtrup

Thomas Wolf

Philipp Neumann

Ulrich Vogl

Rainer Stöhr

Nils Trautmann

Friedemann Reinhard

It is an object of the invention to improve processes, apparatuses and systems for measuring a measured variable. To this end, a measured variable is measured in a measuring process on the basis of an NV center as a quantum sensor. The NV center has a plurality of quantum states and is optically excitable on the basis of an occupancy of one of the quantum states into at least one excited state of the quantum states by means of an excitation light. The at least one excited state can decay at least with emission of emission light of the NV center. In the measuring process, the NV center is irradiated by the excitation light, the excitation light having a time periodic modulation, and a respective occupancy probability and/or a respective lifetime of the quantum states depending on the measured variable and the excitation light. A phase shift is determined between the emission light of the NV center and the modulation of the excitation light and a measurement value for the measured variable is determined on the basis thereof.

Processes, apparatuses and system for measuring a measured variable

Diamond magnetometer

Growing community of inventors

Stuttgart, Germany

Jörg Wrachtrup