Creation of depth-confined, shallow nitrogen-vacancy centers in diamond with tunable density

Hughes Wyatt, Lillian B. [University of California, Santa Barbara, CA (United States); California Institute of Technology, Pasadena, CA (United States)] (ORCID:0000000210201661); Parthasarathy, Shreyas [University of California, Santa Barbara, CA (United States)] (ORCID:000900014861631X); Kantor, Isaac [University of California, Santa Barbara, CA (United States)] (ORCID:0009000908766290); Kim, Casey K. [University of California, Santa Barbara, CA (United States)] (ORCID:0009000219079719); Chen, Lingjie [University of California, Santa Barbara, CA (United States)] (ORCID:0009000679767862); Morrison, Taylor A. [University of California, Santa Barbara, CA (United States)] (ORCID:0009000525396085); Ahlers, Jeffrey [University of California, Santa Barbara, CA (United States)] (ORCID:0000000301904370); Mukherjee, Kunal [Stanford University, Palo Alto, CA (United States)] (ORCID:000000022796856X); Jayich, Ania C. Bleszynski [University of California, Santa Barbara, CA (United States)] (ORCID:0000000334807032)

doi:10.1063/5.0316283

DOE OSTI · 3375271

Creation of depth-confined, shallow nitrogen-vacancy centers in diamond with tunable density

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Abstract

Engineering shallow nitrogen-vacancy (NV) centers in diamond holds the key to unlocking new advances in nanoscale quantum sensing. We find that the creation of near-surface NVs through delta doping during diamond growth allows for tunable control over both NV depth confinement (with a twofold improvement relative to low-energy ion implantation) and NV density, ultimately resulting in highly sensitive single defects and ensembles with coherence limited by NV–NV interactions. Additionally, we demonstrate the utility of our shallow delta-doped NVs by imaging magnetism in few-layer CrSBr, a two-dimensional magnet. Here, we anticipate that the control afforded by near-surface delta doping will enable new developments in NV quantum sensing from nanoscale nuclear magnetic resonance to entanglement-enhanced metrology.

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Chemical vapor deposition Crystallographic defects Doping Metrology Nuclear magnetic resonance Quantum mechanical systems and processes

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Hughes Wyatt, Lillian B. [University of California, Santa Barbara, CA (United States); California Institute of Technology, Pasadena, CA (United States)] (ORCID:0000000210201661), Parthasarathy, Shreyas [University of California, Santa Barbara, CA (United States)] (ORCID:000900014861631X), Kantor, Isaac [University of California, Santa Barbara, CA (United States)] (ORCID:0009000908766290), Kim, Casey K. [University of California, Santa Barbara, CA (United States)] (ORCID:0009000219079719), Chen, Lingjie [University of California, Santa Barbara, CA (United States)] (ORCID:0009000679767862), Morrison, Taylor A. [University of California, Santa Barbara, CA (United States)] (ORCID:0009000525396085), Ahlers, Jeffrey [University of California, Santa Barbara, CA (United States)] (ORCID:0000000301904370), Mukherjee, Kunal [Stanford University, Palo Alto, CA (United States)] (ORCID:000000022796856X), Jayich, Ania C. Bleszynski [University of California, Santa Barbara, CA (United States)] (ORCID:0000000334807032). 2026-05-20. Creation of depth-confined, shallow nitrogen-vacancy centers in diamond with tunable density. https://doi.org/10.1063/5.0316283

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