Related papers: Magnetic field-assisted spectral decomposition and imaging of charge states of NV centers in diamond

Magnetic field-assisted spectral decomposition and imaging of charge states of NV centers in diamond

URL: http://arxiv.org/abs/2103.12807v1
Date: Tue, 23 Mar 2021 19:32:43 GMT
Title: Magnetic field-assisted spectral decomposition and imaging of charge states of NV centers in diamond
Authors: T. Chakraborty, R. Bhattacharya, V. S. Anjusha, M. Nesladek, D. Suter and T. S. Mahesh
Abstract summary: We report two spectroscopy-based deconvolution methods to create charge state mapping images of ensembles of $NV$ centers in diamond. Results help us to determine the spatial distribution of the $NV$ charge states in a diamond sample.
Score: 0.0
License: http://creativecommons.org/licenses/by/4.0/
Abstract: With the advent of quantum technology, nitrogen vacancy ($NV$) centers in diamond turn out to be a frontier which provides an efficient platform for quantum computation, communication and sensing applications. Due to the coupled spin-charge dynamics of the $NV$ system, knowledge about $NV$ charge state dynamics can help to formulate efficient spin control sequences strategically. Through this paper we report two spectroscopy-based deconvolution methods to create charge state mapping images of ensembles of $NV$ centers in diamond. First, relying on the fact that an off axis external magnetic field mixes the electronic spins and selectively modifies the photoluminescence (PL) of $NV^-$, we perform decomposition of the optical spectrum for an ensemble of $NV$s and extract the spectra for $NV^-$ and $NV^0$ states. Next, we introduce an optical filter based decomposition protocol and perform PL imaging for $NV^-$ and $NV^0$. Earlier obtained spectra for $NV^-$ and $NV^0$ states are used to calculate their transmissivities through a long pass optical filter. These results help us to determine the spatial distribution of the $NV$ charge states in a diamond sample.

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