Related papers: Levitated Ferromagnetic Torsional Oscillators for High-Precision Magnetometry and Probing Exotic Interactions

Levitated Ferromagnetic Torsional Oscillators for High-Precision Magnetometry and Probing Exotic Interactions

URL: http://arxiv.org/abs/2603.02074v1
Date: Mon, 02 Mar 2026 17:00:19 GMT
Title: Levitated Ferromagnetic Torsional Oscillators for High-Precision Magnetometry and Probing Exotic Interactions
Authors: Ren Yichong, Wu Lielie, Broer Wijnand, Xue Fei, Huang Pu, Du JiangFeng,
Abstract summary: The device attains a remarkable magnetic sensitivity of $391pm 59, rmfTcdot Hz-1/2$.<n>This capability enables precise detection of weak magnetic fields and provides a novel platform for exploring exotic interactions beyond the Standard Model.
Score: 0.0
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: Levitated ferromagnetic systems are expected to have significant potential in precision magnetic field sensing by leveraging mechanical isolation to minimize mechanical contact and associated noise. Here, we report the implementation of a high-sensitivity magnetometer based on a levitated ferromagnetic torsion oscillator, incorporating a centroid tracking method for superior measurement resolution and noises reduction. The device, featuring a compact sensor volume of $(2.5 \, \rm{mm})^3$ and operating under room temperature, attains a remarkable magnetic sensitivity of {$391\pm 59 \, \rm{fT\cdot Hz^{-1/2}}$}. This capability enables precise detection of weak magnetic fields and provides a novel platform for exploring exotic interactions beyond the Standard Model. These results demonstrate that the levitated torsion oscillator system not only serves as a powerful tool for high-precision magnetic sensing but also holds promise for advancing breakthroughs in fundamental physics.

Related papers

Using NV centers in diamond to detect DC to very-low frequency magnetic fields [0.0]
We present a compact and portable tabletop magnetometer that utilizes negatively charged nitrogen-vacancy centers in diamond.<n>The experimentally measured magnetic field noise-floor is $approx 2.3textrmnTsqrttextrmHz$ while the calculated shot-noise-limited magnetic field sensitivity is $approx 585textrmpTsqrttextrmHz$ when excited with a continuous wave laser at 0.5W.
arXiv Detail & Related papers (2025-12-30T14:57:37Z)
Controllable and Continuous Quantum Phase Transitions in Intrinsic Magnetic Topological Insulator [50.54133633499971]
We study the intrinsic magnetic topological material MnBi2Te4 in which the heavy n-type doping features are strongly suppressed.<n>Based on angle-resolved photoemission spectroscopy, transport measurements, and first-principles calculations, we reveal two magnetism-induced TPTs.<n>Our work paves the way for the realization of intrinsic magnetic topological states in MnBi2Te4 family and provides an ideal platform for achieving controllable and continuous TPTs.
arXiv Detail & Related papers (2025-03-08T03:46:54Z)
Imaging magnetism evolution of magnetite to megabar pressure range with quantum sensors in diamond anvil cell [57.91882523720623]
We develop an in-situ magnetic detection technique at megabar pressures with high sensitivity and sub-microscale spatial resolution. We observe the macroscopic magnetic transition of Fe3O4 in the megabar pressure range from strong ferromagnetism (alpha-Fe3O4) to weak ferromagnetism (beta-Fe3O4) and finally to non-magnetism (gamma-Fe3O4) The presented method can potentially investigate the spin-orbital coupling and magnetism-superconductivity competition in magnetic systems.
arXiv Detail & Related papers (2023-06-13T15:19:22Z)
Ferrimagnetic Oscillator Magnetometer [0.0]
The device exhibits a fixed, calibration-free response governed by the electronmagnetic gyro ratio. The device achieves a minimum sensitivity of 100 fT/$sqrttextHz$ to AC magnetic fields of unknown phase.
arXiv Detail & Related papers (2023-05-31T15:21:57Z)
Measuring the magnon-photon coupling in shaped ferromagnets: tuning of the resonance frequency [50.591267188664666]
cavity photons and ferromagnetic spins excitations can exchange information coherently in hybrid architectures. Speed enhancement is usually achieved by optimizing the geometry of the electromagnetic cavity. We show that the geometry of the ferromagnet plays also an important role, by setting the fundamental frequency of the magnonic resonator.
arXiv Detail & Related papers (2022-07-08T11:28:31Z)
A hybrid ferromagnetic transmon qubit: circuit design, feasibility and detection protocols for magnetic fluctuations [45.82374977939355]
We show that the characteristic hysteretic behavior of the ferromagnetic barrier provides an alternative and intrinsically digital tuning of the qubit frequency by means of magnetic field pulses. The possibility to use the qubit as a noise detector and its relevance to investigate the subtle interplay of magnetism and superconductivity is envisaged.
arXiv Detail & Related papers (2022-06-01T18:50:26Z)
Quantum Magnetometer with Dual-Coupling Optomechanics [15.114575306125545]
An experimentally feasible magnetometer based on a dual-coupling optomechanical system is proposed. The sensitivity of a specific measurement can reach to the order of $10-17rm T/sqrtHz$ in the presence of dissipations.
arXiv Detail & Related papers (2022-05-01T09:37:33Z)
Surpassing the Energy Resolution Limit with ferromagnetic torque sensors [55.41644538483948]
We evaluate the optimal magnetic field resolution taking into account the thermomechanical noise and the mechanical detection noise at the standard quantum limit. We find that the Energy Resolution Limit (ERL), pointed out in recent literature, can be surpassed by many orders of magnitude.
arXiv Detail & Related papers (2021-04-29T15:44:12Z)
An integrated magnetometry platform with stackable waveguide-assisted detection channels for sensing arrays [45.82374977939355]
We present a novel architecture which allows us to create NV$-$-centers a few nanometers below the diamond surface. We experimentally verify the coupling efficiency, showcase the detection of magnetic resonance signals through the waveguides and perform first proof-of-principle experiments in magnetic field and temperature sensing. In the future, our approach will enable the development of two-dimensional sensing arrays facilitating spatially and temporally correlated magnetometry.
arXiv Detail & Related papers (2020-12-04T12:59:29Z)
Single-quadrature quantum magnetometry in cavity electromagnonics [0.0]
Scheme of ultra-sensitive magnetometer in the cavity quantum electromagnonics is proposed. Intracavity microwave mode coupled to a magnonic mode via magnetic dipole interaction is proposed. The estimated theoretical sensitivity of the proposed magnetic amplifier-sensor is approximately in the order of $10-18T/sqrtHz$ which is competitive compared to the current state-of-the-art magnetometers.
arXiv Detail & Related papers (2020-11-11T21:23:19Z)
Ferromagnetic Gyroscopes for Tests of Fundamental Physics [49.853792068336034]
A ferromagnetic gyroscope (FG) is a ferromagnet whose angular momentum is dominated by electron spin polarization and that will precess under the action of an external torque. We model and analyze FG dynamics and sensitivity, focusing on practical schemes for experimental realization.
arXiv Detail & Related papers (2020-10-17T07:13:50Z)
Ultralow mechanical damping with Meissner-levitated ferromagnetic microparticles [0.0]
We show experimentally that micromagnets levitated above type-I superconductors feature very low damping at low frequency and low temperature. Our results open the way towards the development of ultrasensitive magnetomechanical sensors with potential applications to magnetometry and gravimetry.
arXiv Detail & Related papers (2019-12-27T17:30:04Z)

This list is automatically generated from the titles and abstracts of the papers in this site.