Diamond micro-chip for quantum microscopy
The nitrogen-vacancy (NV) center in diamond is an increasingly popular quantum sensor for microscopy of electrical current, magnetization, and spins. However, efficient NV–sample integration with a robust, high-quality interface remains an outstanding challenge to realize scalable, high-throughput microscopy. In this work, we characterize a diamond micro-chip (DMC) containing a (111)-oriented NV ensemble and demonstrate its utility for high-resolution quantum microscopy. We perform strain imaging of the DMC and find minimal detrimental strain variation across a field of view of tens of micrometer. We find good ensemble NV spin coherence and optical properties in the DMC, suitable for sensitive magnetometry. We then use the DMC to demonstrate wide-field microscopy of electrical current and show that diffraction-limited quantum microscopy can be achieved. We also demonstrate the deterministic transfer of DMCs with multiple materials of interest for next-generation electronics and spintronics. Lastly, we develop a polymer-based technique for DMC placement. This work establishes the DMC's potential to expand the application of NV quantum microscopy in materials, device, geological, biomedical, and chemical sciences.
Authors
- Reza Ebadi (ORCID: https://orcid.org/0000-0003-1325-6876)
- Saurabh Lamsal (ORCID: https://orcid.org/0009-0002-7751-6593)
- Cui‐Zu Chang (ORCID: https://orcid.org/0000-0003-3515-2955)
- Ronald L. Walsworth (ORCID: https://orcid.org/0000-0003-0311-4751)
- John Q. Xiao (ORCID: https://orcid.org/0000-0001-7805-8155)
- Johannes Cremer (ORCID: https://orcid.org/0000-0003-4247-4661)
- Amir Yacoby (ORCID: https://orcid.org/0000-0002-5737-7963)
- Mark Ku (ORCID: https://orcid.org/0000-0003-3144-3069)
- Shantam Ravan
- Ling‐Jie Zhou (ORCID: https://orcid.org/0000-0003-2621-6734)
- Jeyson Támara-Isaza (ORCID: https://orcid.org/0000-0003-1848-7809)
- Shahidul Asif (ORCID: https://orcid.org/0000-0002-6430-9969)
- Hang Chen (ORCID: https://orcid.org/0000-0002-2341-3815)
- Yan Li (ORCID: https://orcid.org/0000-0003-0403-3873)
Institutions
- Pennsylvania State University (US)
- Harvard University (US)
- Universidad Nacional de Colombia (CO)
- University of Maryland, College Park (US)
- University of Delaware (US)
Publication Details
- Journal
- AVS Quantum Science
- Published
- 2024-12-01
- DOI
- https://doi.org/10.1116/5.0223774
- Citations
- 2
- Primary Topic
- Diamond and Carbon-based Materials Research
- Type
- article
- Field-Weighted Citation Impact
- 0.23
Funders
- National Science Foundation
- U.S. Department of Energy
- Gordon and Betty Moore Foundation
- University of Delaware Research Foundation
- University of Maryland
- Universidad Nacional de Colombia
- Division of Materials Research
- Army Research Office
- DEVCOM Army Research Laboratory