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Spectroscopy of single N-V-centers in diamond: Tunneling of a substituting nitrogen atom to a vacancy and its manifestations in fluorescence spectra

S. Ya. Kilin, Alexander P. Nizovtsev, Tatiana M. Maevskaya, Achim Dieter Gruber, A. Dräbenstedt, Jörg Wrachtrup, Christian von Borczyskowski

Published Oct 1, 1999• 0 citations
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To describe experiments on fluorescence excitation of single N-V defect centers in diamond we have used the double well potential (DWP) model which incorporates the possibility of tunneling the nitrogen atom into the vacancy both in ground and excited electronic states of the center. Fluorescence and linear absorption spectra are calculated, DWP's parameter values for N-V centers are determined and manifestations of their variations due to local diamond lattice distortions in fluorescence spectra of various single N-V centers are studied.

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Summary form only given. Fluorescence excitation method of single molecule spectroscopy has been applied recently to study individual nitrogen-vacancy (N-V) defect centers in diamond. These objects are of great interest owing to the proposal to build quantum computer at /sup 13/C nuclear spins neighboring the N-V center. Based on new spectroscopic information we have developed simple models of the N-V center and used them to describe a wide range of experiments dealing both with single centers and with their ensembles. The first model emphasizes possible tunneling of N atom into vacancy and describes that in terms of double well potentials. The second model takes into account the spin-triplet character of the ground electronic state of the center and allows to describe a variety of fluorescence detected magnetic resonance phenomena.

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The nitrogen-vacancy (N-$V$) center is a lattice defect in diamond, consisting of a substitutional nitrogen atom and an adjacent vacancy. This study exploits the electron-spin-dependent photoluminescence of N-$V$ centers to use them as radio receivers. The centers transduce frequency-modulated (FM) microwave radio signals to amplitude-modulated (AM) optical fluorescence signals. This effect has potential for photonics, quantum information processing, microwave applications, and wireless communication, even in extreme environments.

Physical Review Applied•Dec 15, 2016•35 citations
To describe experiments on fluorescence excitation of single N-V defect centers in diamond we have used the double well potential (DWP) model which incorporates the possibility of tunneling the nitrogen atom into the vacancy both in ground and excited electronic states of the center. Fluorescence and linear absorption spectra are calculated, DWP's parameter values for N-V centers are determined and manifestations of their variations due to local diamond lattice distortions in fluorescence spectra of various single N-V centers are studied.
Summary form only given. Fluorescence excitation method of single molecule spectroscopy has been applied recently to study individual nitrogen-vacancy (N-V) defect centers in diamond. These objects are of great interest owing to the proposal to build quantum computer at /sup 13/C nuclear spins neighboring the N-V center. Based on new spectroscopic information we have developed simple models of the N-V center and used them to describe a wide range of experiments dealing both with single centers and with their ensembles. The first model emphasizes possible tunneling of N atom into vacancy and describes that in terms of double well potentials. The second model takes into account the spin-triplet character of the ground electronic state of the center and allows to describe a variety of fluorescence detected magnetic resonance phenomena.
The nitrogen-vacancy (N-VVV) center is a lattice defect in diamond, consisting of a substitutional nitrogen atom and an adjacent vacancy. This study exploits the electron-spin-dependent photoluminescence of N-VVV centers to use them as radio receivers. The centers transduce frequency-modulated (FM) microwave radio signals to amplitude-modulated (AM) optical fluorescence signals. This effect has potential for photonics, quantum information processing, microwave applications, and wireless communication, even in extreme environments.