A physically unclonable function using NV diamond magnetometry and micromagnet arrays

• URL: http://arxiv.org/abs/2002.07952v1
• Date: Wed, 19 Feb 2020 01:23:53 GMT
• Title: A physically unclonable function using NV diamond magnetometry and micromagnet arrays
• Authors: Pauli Kehayias, Ezra Bussmann, Tzu-Ming Lu, and Andrew M. Mounce
• Abstract summary: A physically unclonable function (PUF) is an embedded hardware security measure that provides protection against counterfeiting. We present our work on using an array of randomly-magnetized micron-sized ferromagnetic bars (micromagnets) as a PUF.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: A physically unclonable function (PUF) is an embedded hardware security measure that provides protection against counterfeiting. Here we present our work on using an array of randomly-magnetized micron-sized ferromagnetic bars (micromagnets) as a PUF. We employ a 4 $\mu$m thick surface layer of nitrogen-vacancy (NV) centers in diamond to image the magnetic fields from each micromagnet in the array, after which we extract the magnetic polarity of each micromagnet using image analysis techniques. After evaluating the randomness of the micromagnet array PUF and the sensitivity of the NV readout, we conclude by discussing the possible future enhancements for improved security and magnetic readout.

Related papers

• Quantum Imaging of Ferromagnetic van der Waals Magnetic Domain Structures at Ambient Conditions [3.4385973449503853]
  2D van der Waals magnetic materials have attracted significant attention both from a fundamental perspective and for potential applications.<n>Here we address key questions using a nitrogen-vacancy center based quantum magnetic microscope.<n>We employ spatially resolved measures, including magnetization variance and cross-correlation, and find a significant spread in transition temperature yet with no clear dependence on thickness down to 15nm.
  arXiv  Detail & Related papers  (2025-07-27T12:15:25Z)
• Sensing single molecule magnets with nitrogen vacancy centers [0.0]
  Single-molecule magnets (SMMs) are molecules that can function as tiny magnets.<n>In magnetic memory applications, the molecules would probably be on a surface at room temperature.<n>We utilize single NVs to detect the magnetic noise of cobalt-based SMMs' placed on the diamond surface.
  arXiv  Detail & Related papers  (2025-05-25T16:11:26Z)
• Microwave-free imaging magnetometry with nitrogen-vacancy centers in nanodiamonds at near-zero field [0.0]
  Magnetometry using Nitrogen-Vacancy (NV) color centers in diamond predominantly relies on microwave spectroscopy. This work demonstrates a wide-field, microwave-free imaging magnetometer utilizing NV centers in nanodiamonds.
  arXiv  Detail & Related papers  (2024-09-03T18:08:48Z)
• Improving magnetic-field resilience of NbTiN planar resonators using a hard-mask fabrication technique [0.0]
  Losses in microwave superconducting resonators can have several origins, including microscopic defects. We characterize the magnetic field response of NbTiN resonators patterned on sapphire and observe clear absorption lines occurring at specific magnetic fields.
  arXiv  Detail & Related papers  (2023-12-21T10:11:52Z)
• Imaging magnetism evolution of magnetite to megabar pressure range with quantum sensors in diamond anvil cell [57.91882523720623]
  We develop an in-situ magnetic detection technique at megabar pressures with high sensitivity and sub-microscale spatial resolution. We observe the macroscopic magnetic transition of Fe3O4 in the megabar pressure range from strong ferromagnetism (alpha-Fe3O4) to weak ferromagnetism (beta-Fe3O4) and finally to non-magnetism (gamma-Fe3O4) The presented method can potentially investigate the spin-orbital coupling and magnetism-superconductivity competition in magnetic systems.
  arXiv  Detail & Related papers  (2023-06-13T15:19:22Z)
• Revealing Emergent Magnetic Charge in an Antiferromagnet with Diamond Quantum Magnetometry [42.60602838972598]
  Whirling topological textures play a key role in exotic phases of magnetic materials and offer promise for logic and memory applications. In antiferromagnets, these textures exhibit enhanced stability and faster dynamics with respect to ferromagnetic counterparts. One technique that meets the demand of highly sensitive vectorial magnetic field sensing with negligible backaction is diamond quantum magnetometry.
  arXiv  Detail & Related papers  (2023-03-21T18:30:20Z)
• A hybrid ferromagnetic transmon qubit: circuit design, feasibility and detection protocols for magnetic fluctuations [45.82374977939355]
  We show that the characteristic hysteretic behavior of the ferromagnetic barrier provides an alternative and intrinsically digital tuning of the qubit frequency by means of magnetic field pulses. The possibility to use the qubit as a noise detector and its relevance to investigate the subtle interplay of magnetism and superconductivity is envisaged.
  arXiv  Detail & Related papers  (2022-06-01T18:50:26Z)
• Nuclear spin self compensation system for moving MEG sensing with optical pumped atomic spin co-magnetometer [11.44633792903414]
  We describe a new potential candidate: an optically pumped atomic co-magnetometer for moving MEGs recording. In the OPACM, hyper-polarized nuclear spins could produce a magnetic field which will shield the background low frequency magnetic field noise. We show that the OPACM owns a clear suppression of low frequency magnetic field under 1Hz and response to magnetic field's frequencies around the band of the MEGs.
  arXiv  Detail & Related papers  (2022-04-22T03:41:10Z)
• DC Quantum Magnetometry Below the Ramsey Limit [68.8204255655161]
  We demonstrate quantum sensing of dc magnetic fields that exceeds the sensitivity of conventional $Tast$-limited dc magnetometry by more than an order of magnitude. We used nitrogen-vacancy centers in a diamond rotating at periods comparable to the spin coherence time, and characterize the dependence of magnetic sensitivity on measurement time and rotation speed.
  arXiv  Detail & Related papers  (2022-03-27T07:32:53Z)
• Multi-Center Magnon Excitations Open the Entire Brillouin Zone to Terahertz Magnetometry of Quantum Magnets [42.72559625804617]
  The magnon density of states can be accessed over the entire Brillouin zone through three-center magnon excitations. The results of THz time-domain experiments agree remarkably well with linear spin-wave theory.
  arXiv  Detail & Related papers  (2022-03-08T19:04:24Z)
• Surpassing the Energy Resolution Limit with ferromagnetic torque sensors [55.41644538483948]
  We evaluate the optimal magnetic field resolution taking into account the thermomechanical noise and the mechanical detection noise at the standard quantum limit. We find that the Energy Resolution Limit (ERL), pointed out in recent literature, can be surpassed by many orders of magnitude.
  arXiv  Detail & Related papers  (2021-04-29T15:44:12Z)
• A high-sensitivity fiber-coupled diamond magnetometer with surface coating [19.468384174783917]
  Nitrogen-vacancy quantum defects in diamond offer a promising platform for magnetometry. We present a high-sensitivity and wide-bandwidth fiber-based quantum magnetometer for practical applications.
  arXiv  Detail & Related papers  (2021-02-24T11:53:03Z)
• Ferromagnetic Gyroscopes for Tests of Fundamental Physics [49.853792068336034]
  A ferromagnetic gyroscope (FG) is a ferromagnet whose angular momentum is dominated by electron spin polarization and that will precess under the action of an external torque. We model and analyze FG dynamics and sensitivity, focusing on practical schemes for experimental realization.
  arXiv  Detail & Related papers  (2020-10-17T07:13:50Z)
• Nuclear Spin Assisted Magnetic Field Angle Sensing [0.0]
  Quantum sensing exploits the strong sensitivity of quantum systems to measure small external signals. The nitrogen-vacancy center in diamond is one of the most promising platforms for real-world quantum sensing applications.
  arXiv  Detail & Related papers  (2020-10-08T18:24:16Z)
• Optimal coupling of HoW$_{10}$ molecular magnets to superconducting circuits near spin clock transitions [85.83811987257297]
  We study the coupling of pure and magnetically diluted crystals of HoW$_10$ magnetic clusters to microwave superconducting coplanar waveguides. Results show that engineering spin-clock states of molecular systems offers a promising strategy to combine sizeable spin-photon interactions with a sufficient isolation from unwanted magnetic noise sources.
  arXiv  Detail & Related papers  (2019-11-18T11:03:06Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.