Nanoscale magnetometry via collective many-body dynamics in diamond
Abstract
Many-body dynamics constitutes a promising approach for creating correlations between quantum particles which can be used for applications in sensing and metrology. However, utilizing this potential for substantial gains in practical settings is a challenging task with only a very few applications realized to date. Here, we demonstrate an approach to nanoscale magnetic sensing enabled by strongly interacting electronic spins in a room temperature solid. By coherently controlling collective many-body dynamics of a dipolar ensemble of ∼ 104 nitrogen-vacancy (NV) centres in diamond with pulsed magnetic field gradients, we demonstrate practical metrological gain up to 7.9(2) dB for magnetic signal detection and 8.8(3) dB for magnetic noise sensing, fully accounting for experimental overheads. Finally, we combine these methods to demonstrate a momentum-space-resolved sensing modality that enables detection of spatially correlated magnetic noise at continuously tunable length scales down to 50 nanometers. These observations open the door toward practical applications of interaction-enhanced quantum sensors for nanoscale biological imaging and material characterization.
Related
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BibTeX
@misc{gao2026nanoscale,
title = {{Nanoscale magnetometry via collective many-body dynamics in diamond}},
author = {Haoyang Gao and Piotr Put and Nathaniel T. Leitao and Nazlı U. Köylüoğlu and Andrew Maccabe and Mathew Mammen and Siddharth Dandavate and Lillian B. Hughes Wyatt and Leigh S. Martin and Ania C. Bleszynski Jayich and Hongkun Park and Mikhail D. Lukin},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.03039},
eprint = {2609.03039},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.03039},
}
RIS
TY - UNPB
TI - Nanoscale magnetometry via collective many-body dynamics in diamond
AU - Haoyang Gao
AU - Piotr Put
AU - Nathaniel T. Leitao
AU - Nazlı U. Köylüoğlu
AU - Andrew Maccabe
AU - Mathew Mammen
AU - Siddharth Dandavate
AU - Lillian B. Hughes Wyatt
AU - Leigh S. Martin
AU - Ania C. Bleszynski Jayich
AU - Hongkun Park
AU - Mikhail D. Lukin
PY - 2026
DA - 2026/09/02
PB - arXiv
DO - 10.48550/arxiv.2609.03039
UR - https://arxiv.org/abs/2609.03039
AB - Many-body dynamics constitutes a promising approach for creating correlations between quantum particles which can be used for applications in sensing and metrology. However, utilizing this potential for substantial gains in practical settings is a challenging task with only a very few applications realized to date. Here, we demonstrate an approach to nanoscale magnetic sensing enabled by strongly interacting electronic spins in a room temperature solid. By coherently controlling collective many-body dynamics of a dipolar ensemble of ∼ 10^4 nitrogen-vacancy (NV) centres in diamond with pulsed magnetic field gradients, we demonstrate practical metrological gain up to 7.9(2) dB for magnetic signal detection and 8.8(3) dB for magnetic noise sensing, fully accounting for experimental overheads. Finally, we combine these methods to demonstrate a momentum-space-resolved sensing modality that enables detection of spatially correlated magnetic noise at continuously tunable length scales down to 50 nanometers. These observations open the door toward practical applications of interaction-enhanced quantum sensors for nanoscale biological imaging and material characterization.
ER -