Method and system for generating a TAG from a crystalline structure||Method and system for generating a TAG from a crystalline structure

A method (200) for generating a tag from a crystalline structure (102) comprising at least one defect color center (104) and a plurality of non-zero spin nuclei (106) in the vicinity of each defect color center (104), the method comprising: applying (204) at least one microwave field sequence to the crystalline structure (102); applying (206) an optical radiation to the crystalline structure (102) to excite at least one defect color center; detecting (208), for at least one defect color center (104) and at least one nuclei of the plurality of non-zero spin nuclei (106) located in the vicinity thereof, a response of the crystalline structure (102); from the detected response, determining (210), by a processor (114), an atomic signature of the crystalline structure (102), said atomic signature comprising information of the non-zero spin nuclei distribution of the at least one defect color center (104); generating (212), by the processor (114), a unique tag based on the atomic signature.