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Laser Physics Letters

Efficient 2D probe absorption spectrum in nanodiamond nitrogen vacancy centers

Ali Raheli, Hamid Reza Hamedi, Mostafa Sahrai

Published Jul 30, 2015• 8 citations
Publisher

Abstract

In this letter, we investigate the 2D probe absorption spectrum in nanodiamond nitrogen vacancy centers under optical excitation. Different cases of the standing waves–matter interaction are considered to study the spatial dependence of probe absorption. It is shown that due to the quantum interference between different quantum paths in this system, various structures of localization as lattice-like, cross-like, circular-like and ' '-like patterns can be designed by adjusting the detuning intensities and Zeeman shift.

DOI
10.1088/1612-2011/12/9/095201

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In this letter, we investigate the 2D probe absorption spectrum in nanodiamond nitrogen vacancy centers under optical excitation. Different cases of the standing waves–matter interaction are considered to study the spatial dependence of probe absorption. It is shown that due to the quantum interference between different quantum paths in this system, various structures of localization as lattice-like, cross-like, circular-like and ' '-like patterns can be designed by adjusting the detuning intensities and Zeeman shift.
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Abstract We report on the characterization of the angular-dependent emission of single-photon emitters based on single nitrogen-vacancy (NV-) centers in nanodiamond at room temperature. A theoretical model for the calculation of the angular emission patterns of such an NV-center at a dielectric interface will be presented. For the first time, the orientation of the NV-centers in nanodiamond was determined from back focal plane images of NV-centers and by comparison of the theoretical and experimental angular emission pattern. Furthermore, the orientation of the NV-centers was also obtained from measurements of the fluorescence intensity in dependence on the polarization angle of the linearly polarized excitation laser. The results of these measurements are in good agreement. Moreover, the collection efficiency in this setup was calculated to be higher than 80% using the model of the angular emission of the NV-centers.
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In this paper, we explore the spatially dependent absorption properties of a GeV color center in diamond interacting with standing-wave fields. By investigating the conditional position dependence of the probe field's absorption spectra, we demonstrate the impact of various system parameters, including Rabi frequencies and detuning, on the spatial localization of the absorption profile. Through numerical simulations, we observe distinct patterns such as cross-like, lattice-like, and wave-like distributions in two dimensions, as well as hourglass and spherical shapes in three-dimensional space. These patterns can be finely tuned by adjusting the field intensities and detuning conditions. Notably, we show that the absorption profile can be localized in specific regions of space, with detection probabilities controlled by the parameters of the SW fields. Our findings highlight the potential for controlling light-matter interactions in the GeV color center scheme, offering a powerful tool for applications in quantum sensing, imaging, and high-resolution measurements.
Abstract The optical absorption spectrum of the hybrid system composed of the nitrogen-vacancy (NV) center coupled to the mechanical resonators is. investigated. Based on the pump-probe technology, the electronically induced transparency (EIT) is observed and the reasonable explanation for this transparency is given. We demonstrate that the position of the transparency is equal to the detuning difference. In addition, a completely new scheme to measure the coupling between the NV center and current carrying carbon nanotube mechanical resonator is obtained. Furthermore, an optical approach to measure the frequency of the vibrating graphene mechanical resonator is proposed. This work can provide some help for the application in the field of high-precision measurement and quantum information processing.