Patent ID: 11921070
Assignee: CARL ZEISS AG
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 1:
2. An apparatus for measuring a measured variable, comprising:
a spatial region for arranging one or more NV centers;
a light source for irradiating the spatial region with an excitation light which has a temporally periodic modulation and by means of which, when the one or more NV centers are arranged within the spatial region, one or more of the NV centers are optically excitable;
a sensor device configured to capture an emission light emitted by one or more of the NV centers; and
a control device configured to cause the light source to irradiate at least one of the NV centers with the temporally periodically modulated excitation light and, on the basis of the emission light captured by the sensor device, to determine a phase shift between the emission light and the modulation of the excitation light and also, on the basis thereof, to determine a measured value for the measured variable in the case of the at least one NV center.