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
- Sensing of magnetic field effects in radical-pair reactions using a
quantum sensor [50.591267188664666]
Magnetic field effects (MFE) in certain chemical reactions have been well established in the last five decades.
We employ elaborate and realistic models of radical-pairs, considering its coupling to the local spin environment and the sensor.
For two model systems, we derive signals of MFE detectable even in the weak coupling regime between radical-pair and NV quantum sensor.
arXiv Detail & Related papers (2022-09-28T12:56:15Z) - 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) - 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) - Quantum coherent spin-electric control in a molecular nanomagnet at
clock transitions [57.50861918173065]
Electrical control of spins at the nanoscale offers architectural advantages in spintronics.
Recent demonstrations of electric-field (E-field) sensitivities in molecular spin materials are tantalising.
E-field sensitivities reported so far are rather weak, prompting the question of how to design molecules with stronger spin-electric couplings.
arXiv Detail & Related papers (2020-05-03T09:27:31Z) - 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.