A physically unclonable function (PUF) and a method of reading it are provided. The PUF is constituted by a microfabricated array of randomly polarized micromagnets disposed on a substrate. The PUF can be read by creating a magnetization map of the PUF from the signal output of a quantum diamond microscope (QDM) and converting the magnetization map to a numerical sequence.
Technology Area
Quantum sensing
Description
Patent or Application Number
17/494056
Issuance / Grant Date
Lead Licensing Institution
Sandia National Laboratories
IP was generated with QSA funds
No
Point of Contact
David Wick
Entity Account Email Address
ip@sandia.gov
URL
https://www.osti.gov/biblio/1826099-high-resolution-magnetic-microscopy-applica…