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

Claim 4:
5. The measuring method as claimed in claim 1, wherein:
the NV center has a multi-electron system having a total spins and the quantum states of the NV center comprise a plurality of quantum states of the multi-electron system;
the total spin of the multi-electron system in the at least one excited state has a first spin quantum number and the total spin in a second excited state of the multi-electron systems has a second spin quantum number;
the second excited state decays according to its lifetime with emission of the emission light, wherein the lifetime thereof differs from the lifetime of the at least one excited state; and
a ratio between the occupation probability for quantum states having the first spin quantum number and the occupation probability for quantum states having the second spin quantum number is dependent on the measured variable.