Work

Microscale sensing with strongly interacting NV ensembles at high fields

Year: 2025

Type: article

Abstract: Advances in sensing devices that utilize nitrogen-vacancy (NV) center ensembles in diamond are driving progress in microscale nuclear magnetic resonance spectroscopy. Utilizing quantum sensing techniques in the high-field regime significantly boosts sensitivity by increasing thermal polarization and improves spectral quality via enhanced energy shifts. Compatible with the latter, a straightforward manner to further raise sensor sensitivity is to increase NV concentration, although this intensifies detrimental dipole-dipole interactions among NVs. In this Letter, we present a method for detecting NMR signals in high-field scenarios while effectively suppressing dipole-dipole couplings in the NV ensemble. Thus, this approach enhances sensitivity by combining highly doped diamond substrates and elevated magnetic fields.

Source: Physical Review Research

DOI: 10.1103/jksj-736v

Authors: Ainitze Biteri-Uribarren, Ana Martin, Jorge Casanova

Institution: University of the Basque Country

Language: English

Topic: Diamond and Carbon-based Materials Research

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,625

Funders: Hezkuntza, Hizkuntza Politika Eta Kultura Saila, Eusko Jaurlaritza, Eusko Jaurlaritza, Nordisk Ministerråd, HORIZON EUROPE Reforming and enhancing the European Research and Innovation system