Related papers: Characterization of Nuclear Magnetism at Ultralow and Zero Field using SQUIDs

Characterization of Nuclear Magnetism at Ultralow and Zero Field using SQUIDs

URL: http://arxiv.org/abs/2409.17733v1
Date: Thu, 26 Sep 2024 11:04:59 GMT
Title: Characterization of Nuclear Magnetism at Ultralow and Zero Field using SQUIDs
Authors: John Z. Myers, Kai Buckenmaier, Andrey N. Pravdivtsev, Markus Plaumann, Rainer Körber,
Abstract summary: Nuclear magnetism underpins areas such as medicine in magnetic resonance imaging (MRI) We design a hyperpolarization reactor to hyperpolarize [1-$13$C]pyruvate with the technique, signal amplification by reversible exchange in shield enables alignment transfer to heteronuclei (SABRE-SHEATH) Using the results of the simulations, we determined that our hyperpolarization setup results in a $13$C polarization of 0.4%, a signal enhancement of 100 000 000 versus the predicted thermal equilibrium signal at earth field (50 $mu$T)
Score: 0.0
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: Nuclear magnetism underpins areas such as medicine in magnetic resonance imaging (MRI). Hyperpolarization of nuclei enhances the quantity and quality of information that can be determined from these techniques by increasing their signal to noise ratios by orders of magnitude. However, some of these hyperpolarization techniques rely on the use of low to ultralow magnetic fields (ULF) (nTs-mTs), where empirical data on how nuclear magnetism behaves is lacking. The broadband character and ultrasensitive field sensitivity of superconducting quantum interference devices (SQUID) allow for probing nuclear magnetism at these fields, where other magnetometers, such as Faraday coils and flux gates do not. To this end, we designed a hyperpolarization reactor to hyperpolarize [1-$^{13}$C]pyruvate with the technique, signal amplification by reversible exchange in shield enables alignment transfer to heteronuclei (SABRE-SHEATH). Afterwards, we were able to characterize the field sensitivity of our setup by simulating the filled reactor in relation to its placement in our ultralow noise, ULF MRI setup. Using the results of the simulations, we determined that our hyperpolarization setup results in a $^{13}$C polarization of 0.4%, a signal enhancement of ~100 000 000 versus the predicted thermal equilibrium signal at earth field (~50 $\mu$T). This results in a $^{13}$C signal of 7.44$\pm$0.91 pT, which with our ultralow noise setup, opens the possibility for the first direct detection of nuclear magnetism without system perturbation.

Related papers

Live magnetic observation of parahydrogen hyperpolarization dynamics [0.0]
The state of a hyperpolarized material is typically only studied indirectly and with partial destruction of magnetization. Here we establish atomic magnetometers with sub-pT sensitivity to detect in real time the complex dynamics of hyperpolarized materials.
arXiv Detail & Related papers (2024-02-16T15:41:02Z)
A Universal Method to Generate Hyperpolarisation in Beams and Samples [0.0]
We show that the quantum interference of transitions induced by radio-wave pumping with longitudinal and radial pulses are able to produce large polarisations at small magnetic fields. This technique opens the door for a new generation of polarised tracers, possibly low-field MRI with better spatial resolution or the production of polarised fuel to increase the efficiency of fusion reactors.
arXiv Detail & Related papers (2023-11-10T10:20:50Z)
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)
Improving Sensitivity of an Amplitude-Modulated Magneto-Optical Atomic Magnetometer using Squeezed Light [10.396267889929488]
A squeezed probe optical field can improve the sensitivity of the magnetic field measurements based on nonlinear magneto-optical rotation. An independent pump field, amplitude-modulated at the Larmor frequency of the bias magnetic field, allows us to extend the range of most sensitive NMOR measurements to sub-Gauss magnetic fields.
arXiv Detail & Related papers (2022-07-26T15:15:44Z)
High-Field Magnetometry with Hyperpolarized Nuclear Spins [0.0]
We propose and demonstrate a high-field spin magnetometer constructed from an ensemble of hyperpolarized $13C$ nuclear spins in diamond. For quantum sensing at 7T and a single crystal sample, we demonstrate spectral resolution better than 100 mHz. This work points to interesting opportunities for microscale NMR chemical sensors constructed from hyperpolarized nanodiamonds.
arXiv Detail & Related papers (2021-12-22T01:33:07Z)
Demonstration of electron-nuclear decoupling at a spin clock transition [54.088309058031705]
Clock transitions protect molecular spin qubits from magnetic noise. linear coupling to nuclear degrees of freedom causes a modulation and decay of electronic coherence. An absence of quantum information leakage to the nuclear bath provides opportunities to characterize other decoherence sources.
arXiv Detail & Related papers (2021-06-09T16:23:47Z)
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)
Controlled coherent dynamics of [VO(TPP)], a prototype molecular nuclear qudit with an electronic ancilla [50.002949299918136]
We show that [VO(TPP)] (vanadyl tetraphenylporphyrinate) is a promising system suitable to implement quantum computation algorithms. It embeds an electronic spin 1/2 coupled through hyperfine interaction to a nuclear spin 7/2, both characterized by remarkable coherence.
arXiv Detail & Related papers (2021-03-15T21:38:41Z)
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)
Direct control of high magnetic fields for cold atom experiments based on NV centers [50.591267188664666]
In cold atomic gases the interactions between the atoms are directly controllable through external magnetic fields. Here, we overcome the limitations of such an indirect control through a direct feedback scheme. We achieve a control of better than 1 ppm after 20 minutes of integration time, ensuring high long-term stability for experiments.
arXiv Detail & Related papers (2020-03-18T09:03:25Z)
Optimal coupling of HoW$_{10}$ molecular magnets to superconducting circuits near spin clock transitions [85.83811987257297]
We study the coupling of pure and magnetically diluted crystals of HoW$_10$ magnetic clusters to microwave superconducting coplanar waveguides. Results show that engineering spin-clock states of molecular systems offers a promising strategy to combine sizeable spin-photon interactions with a sufficient isolation from unwanted magnetic noise sources.
arXiv Detail & Related papers (2019-11-18T11:03:06Z)

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