# Miniature cavity-enhanced diamond magnetometer

@article{Chatzidrosos2017MiniatureCD,
title={Miniature cavity-enhanced diamond magnetometer},
author={Georgios Chatzidrosos and Arne Wickenbrock and Lykourgos Bougas and Nathan Leefer and Teng Wu and Kasper Jensen and Yannick Dumeige and Dmitry Budker Johannes Gutenberg-Universitat Mainz Niels Institute and University of Oslo Cnrs and U. Krey Inst.of Molecular Physics and University of Southern California and Berkeley Nuclear Science Division and Lawrence Berkeley National Laboratory},
journal={arXiv: Quantum Physics},
year={2017}
}
We present a highly sensitive miniaturized cavity-enhanced room-temperature magnetic-field sensor based on nitrogen-vacancy (NV) centers in diamond. The magnetic resonance signal is detected by probing absorption on the 1042\,nm spin-singlet transition. To improve the absorptive signal the diamond is placed in an optical resonator. The device has a magnetic-field sensitivity of 28 pT/$\sqrt{\rm{Hz}}$, a projected photon shot-noise-limited sensitivity of 22 pT/$\sqrt{\rm{Hz}}$ and an estimated…

## Figures from this paper

Continuous-Wave Magnetic Field Sensing with Nitrogen-Vacancy Centers in Diamond
The nitrogen-vacancy center, a point defect in diamond, is a promising quantum sensor for magnetic field sensing with high sensitivity and high spatial resolution under ambient conditions. Such a
Nanotesla sensitivity magnetic field sensing using a compact diamond nitrogen-vacancy magnetometer
Solid state sensors utilizing diamond nitrogen-vacancy (NV) centers are a promising sensing platform that can provide high sensitivity and spatial resolution at high precision. Such sensors have been
Compact integrated magnetometer based on nitrogen-vacancy centres in diamond
Abstract We demonstrate an integrated and miniaturised magnetic field sensor based on the negatively charged nitrogen-vacancy centres (NV−) in diamond. The compact device includes all optical
Eddy-Current Imaging with Nitrogen-Vacancy Centers in Diamond
We demonstrate microwave-free eddy-current imaging using nitrogen-vacancy centers in diamond. By detecting the eddy-current induced magnetic field of conductive samples, we can distinguish between
Distributed Quantum Fiber Magnetometry
• Materials Science, Physics
Laser & Photonics Reviews
• 2019
Nitrogen-vacancy (NV) quantum magnetometers offer exceptional sensitivity and long-term stability. However, their use to date in distributed sensing applications, including remote detection of
Simultaneous Broadband Vector Magnetometry Using Solid-State Spins
• Physics, Mathematics
Physical Review Applied
• 2018
We demonstrate a vector magnetometer that simultaneously measures all Cartesian components of a dynamic magnetic field using an ensemble of nitrogen-vacancy (NV) centers in a single-crystal diamond.
Infrared laser threshold magnetometry with a NV doped diamond intracavity etalon.
A hybrid laser system consisting of a semiconductor external cavity laser associated to an intra-cavity diamond etalon doped with nitrogen-vacancy color centers and a laser-based optical sensor that could be easily adapted to a broad variety of sensing applications based on absorption spectroscopy.
Microwave-Free Vector Magnetometry with Nitrogen-Vacancy Centers along a Single Axis in Diamond
Sensing vector magnetic fields is critical to many applications in fundamental physics, bioimaging, and material science. Magnetic-field sensors exploiting nitrogen-vacancy (NV) centers are
A biocompatible technique for magnetic field sensing at (sub)cellular scale using Nitrogen-Vacancy centers
We present an innovative experimental set-up that uses Nitrogen-Vacancy centres in diamonds to measure magnetic fields with the sensitivity of η = 68 ± 3 nT / Hz \$\eta =68\pm
A hand-held magnetometer based on an ensemble of nitrogen-vacancy centers in diamond
The development of practical applications of the magnetometer based on ensemble of nitrogen-vacancy centers has been impeded by the large size of the system. In this paper, we present an integrated

## References

SHOWING 1-10 OF 18 REFERENCES
Cavity-enhanced room-temperature magnetometry using absorption by nitrogen-vacancy centers in diamond.
A cavity-enhanced room-temperature magnetic field sensor based on nitrogen-vacancy centers in diamond that detects magnetic resonance using absorption of light resonant with the 1042 nm spin-singlet transition is demonstrated.
Magnetometry with nitrogen-vacancy ensembles in diamond based on infrared absorption in a doubly resonant optical cavity
We propose using an optical cavity to enhance the sensitivity of a magnetometer relying on the detection of the spin state of a high-density nitrogen-vacancy ensemble in diamond using infrared
Level anti-crossing magnetometry with color centers in diamond
Recent developments in magnetic field sensing with negatively charged nitrogen-vacancy centers (NV) in diamond employ magnetic-field (MF) dependent features in the photoluminescence (PL) and
Efficient photon detection from color centers in a diamond optical waveguide
A common limitation of experiments using color centers in diamond is the poor photon collection efficiency of microscope objectives due to refraction at the diamond interface. We present a simple and
Broadband magnetometry by infrared-absorption detection of nitrogen-vacancy ensembles in diamond
• Physics
• 2010
We demonstrate magnetometry by detection of the spin state of high-density nitrogen-vacancy ensembles in diamond using optical absorption at 1042 nm. With this technique, measurement contrast, and
Nanoscale magnetic sensing with an individual electronic spin in diamond
An approach to nanoscale magnetic sensing is experimentally demonstrated, using coherent manipulation of an individual electronic spin qubit associated with a nitrogen-vacancy impurity in diamond at room temperature to achieve detection of 3 nT magnetic fields at kilohertz frequencies after 100 s of averaging.
Optical magnetic detection of single-neuron action potentials using quantum defects in diamond
• J. Barry, +5 authors R. Walsworth
• Chemistry, Physics
Proceedings of the National Academy of Sciences
• 2016
It is shown that AP magnetic sensing can be realized with both single-neuron sensitivity and intact organism applicability using optically probed nitrogen-vacancy quantum defects in diamond, operated under ambient conditions and with the NV diamond sensor in close proximity to the biological sample.
Nanoscale imaging magnetometry with diamond spins under ambient conditions
This work shows how magneto-optical spin detection can be used to determine the location of a spin associated with a single nitrogen-vacancy centre in diamond with nanometre resolution under ambient conditions, and demonstrates the use of a single diamond spin as a scanning probe magnetometer to map nanoscale magnetic field variations.
Nuclear magnetic resonance detection and spectroscopy of single proteins using quantum logic
Using quantum logic to improve readout fidelity and a surface-treatment technique to extend the spin coherence time of shallow nitrogen-vacancy centers, magnetic field sensitivity sufficient to detect individual proton spins within 1 second of integration is demonstrated.
Nanometre-scale thermometry in a living cell
A new approach to nanoscale thermometry is demonstrated that uses coherent manipulation of the electronic spin associated with nitrogen–vacancy colour centres in diamond to detect temperature variations as small as 1.8 mK in an ultrapure bulk diamond sample and demonstrate temperature-gradient control and mapping at the subcellular level.