Polarization-Assisted Vector Magnetometry with No Bias Field Using an Ensemble of Nitrogen-Vacancy Centers in Diamond

Münzhuber, Franz; Bayer, Florian; Marković, Vera; Kleinlein, Johannes; Molenkamp, Laurens W.; Kießling, T.

doi:10.1103/physrevapplied.14.014055

Cited by 6 publications

(8 citation statements)

References 29 publications

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“…In this paper, we propose a different approach that exploits the polarization properties of the NV center emission and absorption processes to tune respectively the NV center excitation probability and the PL collection efficiency. Previous works investigated these two contributions and employed them principally to identify the orientation of NV centers [21][22][23][24][25] . Here, we exploit both of them to tune and optimize the contrast and the magnetic sensitivity (Eq.…”

Section: Magnetic Sensitivity Enhancement Via Polarimetric Excitation...mentioning

confidence: 99%

Magnetic sensitivity enhancement via polarimetric excitation and detection of an ensemble of NV centers

Magaletti,

Mayer,

et al. 2024

Sci Rep

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The negatively charged nitrogen-vacancy center (NV) presents remarkable spin-dependent optical properties that make it an interesting tool for magnetic field sensing. In this paper we exploit the polarization properties of the NV center absorption and emission processes to improve the magnetic sensitivity of an ensemble of NV centers. By simply equipping the experimental set-up of a half-wave plate in the excitation path and a polarizer in the detection path we demonstrate an improvement larger than a factor of two on the NV center magnetic sensitivity.

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Section: Magnetic Sensitivity Enhancement Via Polarimetric Excitation...mentioning

confidence: 99%

Magnetic sensitivity enhancement via polarimetric excitation and detection of an ensemble of NV centers

Magaletti,

Mayer,

et al. 2024

Sci Rep

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“…In previous research, [23,33] only the relationship between the pole angle 𝛼 of the electric field and the excitation efficiency has been discussed. Thus, some NV axes have the same trend of the fluorescence intensity change, which is challenging to distinguish, as illustrated in Figure 3.…”

Section: Theoretical Analysis and Experimental Setupmentioning

confidence: 99%

“…The fluorescence intensity distribution is determined considering the interaction between the electric field vector and the excitation dipole of the NV center. The dipole moments d 1 and d 2 are oriented perpendicular to the NV axis and each other and can be expressed as follows: [4,23,32,33]…”

Section: Theoretical Analysis and Experimental Setupmentioning

confidence: 99%

Controlled Polarized Optical Excitation Method on Ensembles of Nitrogen‐Vacancy Centers in Diamonds

Guo,

Li,

Zhang

et al. 2023

Adv Quantum Tech

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Crystal axes must be distinguished in vector magnetic measurements of ensemble nitrogen‐vacancy (NV) centers in diamonds. However, achieving crystal axes distinction in confocal systems without a magnetic bias field is challenging. Thus, a controlled polarized optical excitation method to overcome this problem is proposed. The polarization angle of the excitation beam can be adjusted in free space using an optical pen for higher controllable degrees of freedom. Compared to previous optical excitation methods, the proposed method improves the maximum suppression by 19.2% and the maximum excitation by 42.4%. Moreover, the proposed method has a decoupling effect on NV axis resonances with a similar change trend. This method can easily replace existing optical excitation methods in NV measurement systems and is a powerful tool for ensembles of NV centers’ vector measurements without relying on magnetic bias fields.

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“…The combination of ODMR with the polarization anisotropy of NVcenters [28] in optical excitation and emission can enable vector magnetometry without a magnetic bias field. Current implementations depend on spatial microwave field inhomogeneities [29] or on a polarization-controlled detection with Fourier-plane imaging with a (100) oriented diamond. [30] This work proposes the combination of a controlled polarized optical excitation and ODMR on ensembles of NVin diamond, which enables vector magnetometry independent of the crystal orientation.…”

Section: Doi: 101002/qute202200077mentioning

confidence: 99%

“…The combination of ODMR with the polarization anisotropy of NV – centers [ 28 ] in optical excitation and emission can enable vector magnetometry without a magnetic bias field. Current implementations depend on spatial microwave field inhomogeneities [ 29 ] or on a polarization‐controlled detection with Fourier‐plane imaging with a (100) oriented diamond. [ 30 ]…”

Section: Introductionmentioning

confidence: 99%

Vector Magnetometry Based on Polarimetric Optically Detected Magnetic Resonance

2022

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A robust technique is introduced for vector magnetometry based on polarimetry and optically detected magnetic resonance of ensembles of negatively charged nitrogen-vacancy (NV -) centers in diamond without a magnetic bias field. Ensembles provide a far greater signal-to-noise ratio than single centers, and their creation requires less effort. Previous methods for vector magnetometry using ensembles of NVcenters relied on a calibrated magnetic bias field or on complex detection techniques to distinguish the crystal axes. Instead, this work uses out-of-plane polarized light to selectively excite NVcenters oriented along specific crystal axes. This approach is general for other spin-1 color centers with C 3v symmetry, and it is compatible with standard microscopy methods, such as scanning probe, superresolution, confocal, and wide-field imaging.

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Polarization-Assisted Vector Magnetometry with No Bias Field Using an Ensemble of Nitrogen-Vacancy Centers in Diamond

Cited by 6 publications

References 29 publications

Magnetic sensitivity enhancement via polarimetric excitation and detection of an ensemble of NV centers

Magnetic sensitivity enhancement via polarimetric excitation and detection of an ensemble of NV centers

Controlled Polarized Optical Excitation Method on Ensembles of Nitrogen‐Vacancy Centers in Diamonds

Vector Magnetometry Based on Polarimetric Optically Detected Magnetic Resonance

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