A Fiber-Coupled Scanning Magnetometer with Nitrogen-Vacancy Spins in a Diamond Nanobeam

Journal article (2023)

Authors

Y. Li QN/vanderSarlab - AS , Kavli institute of nanoscience Delft
F.A. Gerritsma Kavli institute of nanoscience Delft, QN/vanderSarlab - AS
S. Kurdi Kavli institute of nanoscience Delft, QN/vanderSarlab - AS
N. Codreanu Kavli institute of nanoscience Delft, QuTech Advanced Research Centre, QID/Hanson Lab - QuTech Advanced Research Centre
S. Groeblacher Kavli institute of nanoscience Delft, QN/Groeblacher Lab - AS
R. Hanson QuTech Advanced Research Centre, QID/Hanson Lab - QuTech Advanced Research Centre , QN/Hanson Lab - AS , Kavli institute of nanoscience Delft
R.A. Norte Dynamics of Micro and Nano Systems - Mechanical, Maritime and Materials Engineering , QN/Groeblacher Lab - AS , Kavli institute of nanoscience Delft
T. van der Sar QN/vanderSarlab - AS , Kavli institute of nanoscience Delft
Research Group
QN/vanderSarlab (AS) (TU Delft)
Copyright: © 2023 Y. Li, F.A. Gerritsma, S. Kurdi, N. Codreanu, S. Groeblacher, R. Hanson, R.A. Norte, T. van der Sar
DOI: https://doi.org/10.1021/acsphotonics.3c00259
More Info
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Published Date

2023

Language

English

Faculty

Applied Sciences

Department

QN/Quantum Nanoscience

Research Group

QN/vanderSarlab

Abstract

Magnetic imaging with nitrogen-vacancy (NV) spins in diamond is becoming an established tool for studying nanoscale physics in condensed matter systems. However, the optical access required for NV spin readout remains an important hurdle for operation in challenging environments such as millikelvin cryostats or biological systems. Here, we demonstrate a scanning-NV sensor consisting of a diamond nanobeam that is optically coupled to a tapered optical fiber. This nanobeam sensor combines a natural scanning-probe geometry with high-efficiency through-fiber optical excitation and readout of the NV spins. We demonstrate through-fiber optically interrogated electron spin resonance and proof-of-principle magnetometry operation by imaging spin waves in an yttrium-iron-garnet thin film. Our scanning-nanobeam sensor can be combined with nanophotonic structuring to control the light-matter interaction strength and has potential for applications that benefit from all-fiber sensor access, such as millikelvin systems.