Kilohertz electron paramagnetic resonance spectroscopy of single nitrogen centers at zero magnetic field

• URL: http://arxiv.org/abs/2005.14718v1
• Date: Fri, 29 May 2020 17:59:48 GMT
• Title: Kilohertz electron paramagnetic resonance spectroscopy of single nitrogen centers at zero magnetic field
• Authors: Fei Kong, Pengju Zhao, Pei Yu, Zhuoyang Qin, Zhehua Huang, Zhecheng Wang, Mengqi Wang, Fazhan Shi, and Jiangfeng Du
• Abstract summary: nitrogen-vacancy centers in diamond serve as an atomic-sized magnetometer. Current megahertz spectral resolution is still insufficient to resolve key heterogeneous molecular information. We demonstrate a 27-fold narrower spectrum of single substitutional nitrogen centers in diamond with linewidth of several kilohertz.
• Score: 9.976365365803575
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Electron paramagnetic resonance spectroscopy (EPR) is among the most important analytical tools in physics, chemistry, and biology. The emergence of nitrogen-vacancy (NV) centers in diamond, serving as an atomic-sized magnetometer, has promoted this technique to single-spin level, even under ambient conditions. Despite the enormous progress in spatial resolution, the current megahertz spectral resolution is still insufficient to resolve key heterogeneous molecular information. A major challenge is the short coherence times of the sample electron spins. Here, we address this challenge by employing a magnetic noise-insensitive transition between states of different symmetry. We demonstrate a 27-fold narrower spectrum of single substitutional nitrogen (P1) centers in diamond with linewidth of several kilohertz, and then some weak couplings can be resolved. Those results show both spatial and spectral advances of NV center-based EPR, and provide a route towards analytical (EPR) spectroscopy at single-molecule level.

Related papers

• Spin Squeezing with Magnetic Dipoles [37.93140485169168]
  Entanglement can improve the measurement precision of quantum sensors beyond the shot noise limit. We take advantage of the magnetic dipole-dipole interaction native to most neutral atoms to realize spin-squeezed states. We achieve 7.1 dB of metrologically useful squeezing using the finite-range spin exchange interactions in an erbium quantum gas microscope.
  arXiv  Detail & Related papers  (2024-11-11T18:42:13Z)
• High-resolution spectroscopy of a single nitrogen-vacancy defect at zero magnetic field [0.3848364262836075]
  We report a study of high-resolution microwave spectroscopy of nitrogen-vacancy centers in diamond crystals at and around zero magnetic field. We observe characteristic splitting and transition imbalance of the hyperfine transitions, which originate from level anti-crossings in the presence of a transverse effective field. Our results are of importance for the optimization of the experimental conditions for the polarization-selective microwave excitation of spin-1 systems in zero or weak magnetic fields.
  arXiv  Detail & Related papers  (2022-06-30T02:49:49Z)
• Multi-Center Magnon Excitations Open the Entire Brillouin Zone to Terahertz Magnetometry of Quantum Magnets [42.72559625804617]
  The magnon density of states can be accessed over the entire Brillouin zone through three-center magnon excitations. The results of THz time-domain experiments agree remarkably well with linear spin-wave theory.
  arXiv  Detail & Related papers  (2022-03-08T19:04:24Z)
• High-resolution 'magic'-field spectroscopy on trapped polyatomic molecules [62.997667081978825]
  Rapid progress in cooling and trapping of molecules has enabled first experiments on high resolution spectroscopy of trapped diatomic molecules. Extending this work to polyatomic molecules provides unique opportunities due to more complex geometries and additional internal degrees of freedom.
  arXiv  Detail & Related papers  (2021-10-21T15:46:17Z)
• Homonuclear J-Coupling Spectroscopy at Low Magnetic Fields using Spin-Lock Induced Crossing [0.03705745122469343]
  We demonstrate that spectra can be acquired at low field using a novel pulse sequence called spin-lock induced crossing (SLIC) This probes energy level crossings induced by a weak spin-locking pulse and produces a unique J-coupling spectrum for most organic molecules. We performed SLIC spectroscopy on a number of small molecules at 276 kHz and 20.8 MHZ, and we show that SLIC spectra can be simulated in good agreement with measurements.
  arXiv  Detail & Related papers  (2021-03-01T20:17:24Z)
• Investigation of the Stark Effect on a Centrosymmetric Quantum Emitter in Diamond [1.370946572773376]
  Theory indicates that Group IV-vacancy defect centers provide first-order insensitivity to stray electric fields. We experimentally quantify this electric field dependence via an external electric field applied to individual tin-vacancy centers in diamond.
  arXiv  Detail & Related papers  (2021-02-02T05:45:04Z)
• A multiconfigurational study of the negatively charged nitrogen-vacancy center in diamond [55.58269472099399]
  Deep defects in wide band gap semiconductors have emerged as leading qubit candidates for realizing quantum sensing and information applications. Here we show that unlike single-particle treatments, the multiconfigurational quantum chemistry methods, traditionally reserved for atoms/molecules, accurately describe the many-body characteristics of the electronic states of these defect centers.
  arXiv  Detail & Related papers  (2020-08-24T01:49:54Z)
• From megahertz to terahertz qubits encoded in molecular ions: theoretical analysis of dipole-forbidden spectroscopic transitions in N$\mathbf{_2^+}$ [0.0]
  We study theoretically the implementation of qubits and clock transitions in the spin, rotational, and vibrational degrees of freedom of molecular ions. We identify two types of magnetically insensitive qubits with very low ("stretched"-state qubits) or even zero ("magic" magnetic-field qubits) linear Zeeman shifts. We explore possibilities to coherently control the nuclear-spin configuration of N$+$ through the magnetically enhanced mixing of nuclear-spin states.
  arXiv  Detail & Related papers  (2020-07-21T21:24:13Z)
• Effect of phonons on the electron spin resonance absorption spectrum [62.997667081978825]
  We model the effect of phonons and temperature on the electron spin resonance (ESR) signal in magnetically active systems. We find that the suppression of ESR signals is due to phonon broadening but not based on the common assumption of orbital quenching.
  arXiv  Detail & Related papers  (2020-04-22T01:13:07Z)
• Two-Dimensional Single- and Multiple-Quantum Correlation Spectroscopy in Zero-Field Nuclear Magnetic Resonance [55.41644538483948]
  We present single- and multiple-quantum correlation $J$-spectroscopy detected in zero magnetic field using a Rb vapor-cell magnetometer. At zero field the spectrum of ethanol appears as a mixture of carbon isotopomers, and correlation spectroscopy is useful in separating the two composite spectra.
  arXiv  Detail & Related papers  (2020-04-09T10:02:45Z)
• Nanoscale zero-field electron spin resonance spectroscopy [8.243565925797414]
  We present a method for deploying ZF-ESR spectroscopy at the nanoscale by using a highly sensitive quantum sensor, the nitrogen-vacancy center in diamond. We also measure the nanoscale ZF-ESR spectrum of a few P1 centers in diamond, and show that the hyperfine coupling constant can be directly extracted from the spectrum.
  arXiv  Detail & Related papers  (2020-02-19T03:08:13Z)

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.