Femtotesla Atomic Magnetometer for Zero- and Ultralow-field Nuclear Magnetic Resonance

• URL: http://arxiv.org/abs/2403.01917v1
• Date: Mon, 4 Mar 2024 10:32:26 GMT
• Title: Femtotesla Atomic Magnetometer for Zero- and Ultralow-field Nuclear Magnetic Resonance
• Authors: Taizhou Hong, Yuanhong Wang, Zhenhan Shao, Qing Li, Min Jiang, Xinhua Peng
• Abstract summary: A potassium vapor cell with high buffer gas pressure and high atomic number density is used in the magnetometer. A custom-made vacuum chamber is employed to keep NMR sample close to the magnetometer cell and protect the sample from undesired heating effects. Our SERF magnetometer exhibits high sensitivity and is promising to realize ZULF NMR detection of samples with natural abundance.
• Score: 7.905028173574522
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Zero- and ultralow-field nuclear magnetic resonance (ZULF NMR) has experienced rapid development and provides an excellent tool for diverse research fields ranging from materials science, quantum information processing to fundamental physics. The detection of ZULF NMR signals in samples with natural abundance remains a challenging endeavor, due to the limited sensitivity of NMR detectors and thermal polarization. In this work, we demonstrate a femtotesla potassium spin-exchange relaxation-free (SERF) magnetometer designed for ZULF NMR detection. A potassium vapor cell with high buffer gas pressure and high atomic number density is used in the magnetometer. With absorption spectroscopy and SERF effect, the key parameters of the vapor cell are characterized and applied to optimize the magnetometer sensitivity. To combine our SERF magnetometer and ZULF NMR detection, a custom-made vacuum chamber is employed to keep NMR sample close to the magnetometer cell and protect the sample from undesired heating effects. Gradiometric measurement is performed to greatly reduce the magnetic noise. With the phase calibration applied, the gradiometric measurement achieves 7-fold enhancement in magnetic-field sensitivity compared to the single channel and has a magnetic noise floor of 1.2 fT/Hz$^{1/2}$. Our SERF magnetometer exhibits high sensitivity and is promising to realize ZULF NMR detection of samples with natural abundance.

Related papers

• Real-time Simultaneous Dual Sensing of Temperature and Magnetic Field using NV-based Nano-diamonds [0.0]
  Quantum sensors based on Nitrogen Vacancy (NV) centers in diamond are highly capable of sensing multiple physical quantities. We present NVNDs' capacity to simultaneously sense both thermal and magnetic fields in real time.
  arXiv  Detail & Related papers  (2024-08-30T17:07:33Z)
• Nuclear quadrupole resonance spectroscopy with a femtotesla diamond magnetometer [0.0]
  We demonstrate a femtotesla RF magnetometer based on an NV-doped diamond membrane inserted between two ferrite flux concentrators. The device operates in bias magnetic fields of 2-10 microtesla and provides a 300-fold amplitude enhancement within the diamond for RF magnetic fields in the 0.07-3.6 MHz range.
  arXiv  Detail & Related papers  (2023-02-24T02:09:26Z)
• 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)
• Temperature Sensing with RF-Dressed States of Nitrogen-Vacancy Centers in Diamond [0.0]
  Nitrogen vacancy (NV) centers in diamond are promising systems for realizing sensitive temperature sensors. We propose a novel method to measure temperature using CW-ODMR with a quantum state dressed by radio-frequency (RF) fields under transverse magnetic fields.
  arXiv  Detail & Related papers  (2022-05-14T05:38:22Z)
• Investigation and comparison of measurement schemes in the low frequency biosensing regime using solid-state defect centers [58.720142291102135]
  Solid state defects in diamond make promising quantum sensors with high sensitivity andtemporal resolution. Inhomogeneous broadening and drive amplitude variations have differing impacts on the sensitivity depending on the sensing scheme used. We numerically investigate and compare the predicted sensitivity of schemes based on continuous-wave (CW) optically detected magnetic resonance (ODMR) spectroscopy, pi-pulse ODMR and Ramsey interferometry.
  arXiv  Detail & Related papers  (2021-09-27T13:05:23Z)
• 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)
• Zero- to ultralow-field nuclear magnetic resonance and its applications [11.963366832132495]
  ZULF NMR detects nuclear magnetization signals in the sub-microtesla regime. Spin-exchange relaxation-free atomic magnetometers provide a new generation of sensitive detector for ZULF NMR. ZULF NMR has recently attracted considerable attention in chemistry, biology, medicine, and tests of fundamental physics.
  arXiv  Detail & Related papers  (2020-11-30T16:13:20Z)
• 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)
• Real-time estimation of the optically detected magnetic resonance shift in diamond quantum thermometry [47.50219326456544]
  We investigate the real-time estimation protocols for the frequency shift of optically detected magnetic resonance (ODMR) of nitrogen-vacancy centers in nanodiamonds (NDs) Efficiently integrating multipoint ODMR measurements and ND particle tracking into fluorescence microscopy has recently demonstrated stable monitoring of the temperature inside living animals.
  arXiv  Detail & Related papers  (2020-06-12T01:44:35Z)
• A robust fiber-based quantum thermometer coupled with nitrogen-vacancy centers [29.359306535600815]
  We present a robust fiber-based quantum thermometer which can significantly isolate the magnetic field noise and microwave power shift. With a frequency modulation scheme, we realize the temperature measurement by detecting the variation of the sharp-dip in the zero-field optically detected magnetic resonance spectrum.
  arXiv  Detail & Related papers  (2020-04-09T03:24:52Z)
• Optimisation of a diamond nitrogen vacancy centre magnetometer for sensing of biological signals [44.62475518267084]
  We present advances in biomagnetometry using nitrogen vacancy centres in diamond. We show magnetic field sensitivity of approximately 100 pT/$sqrtHz$ in the DC/low frequency range using a setup designed for biological measurements.
  arXiv  Detail & Related papers  (2020-04-05T18:44:34Z)

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

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.