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Journal of the Optical Society of America B

Spontaneous parametric four wave mixing and fluorescence lifetime manipulation in the diamond nitrogen vacancy center

Ghulam Abbas Khan, Irfan Ahmed, Faizan Raza, Ruimen Wang, Changbiao Li, Yanpeng Zhang

Published Aug 14, 2018• 3 citations
Publisher

Abstract

We report the lifetime of spontaneous parametric four wave mixing (SP-FWM) and multiorder fluorescence in two-, three-, and four-level systems of negatively charged nitrogen vacancy (NV−) in diamond. The lifetime of SP-FWM is enhanced at high power by the induced dark state from coupling fields. The reduction and enhancement in fluorescence lifetime are attributed to destructive and constructive quantum interference, respectively. The quantum interference is induced by interaction among different decay pathways of spontaneous emission by closely spaced energy levels, which can be controlled by dipole–dipole interaction and the mutual orientations of dipole moments. The lifetime is observed to be longer in two-level as compared to three-level and four-level systems. The different measured lifetimes suggest the sensitivity of these NV systems to quantum interference and the dressing effect. These outcomes may provide new insights in development of all-optical communication devices and quantum storage on photonic chips.

DOI
10.1364/josab.35.002137

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Lifetime Polarization of Dressed Multiorder Fluorescence and Spontaneous Parametric Four-Wave Mixing in Pr 3+^{3+}3+ :YSO
We investigate lifetime (induced dipole–dipole interaction) of spontaneous parametric four-wave mixing (SP-FWM) and multiorder fluorescence (FL) signals controlled by polarization dressing in a heteronuclear-like molecule system of Pr$^{3+} $:YSO. The comparisons between a lifetime of SP-FWM and multiorder FL controlled by single dressing, double dressing, and triple dressing polarization have been investigated. It is observed that FLs have a stronger dressing effect than SP-FWM. The polarization dressing is more obvious in the intensity signal in the spectral domain than that in the time domain. Such results have potential applications in quantum communication such as optical information storage, routing, and processing on a photonic chip.
We report the measured dressed lifetimes of fourth-order fluorescence and spontaneous parametric four-wave mixing signals by the perturbation chain method in a two-level and heteronuclear-like molecule system of Pr3+:YSO both in theory and experiment. The lifetime of the fourth-order fluorescence depends on the nonlinear processes in the perturbation chain, and can be modulated by the dark state due to the dressing effect and the induced dipole–dipole interaction by changing the frequency detuning and power of the controlling field. Such results can find potential applications in all-optical communication and optical information processing on photonic chips.
We investigate fluorescence (FL) and spontaneous parametric four-wave mixing (SP-FWM) signals in V-, Λ- and N-type energy level systems by changing the frequency detuning or power of the dressing field in Pr 3+ doped Y 2 SiO 5 at 77 K. The lifetime of the two kinds of signals has been calculated, and the desired experimental results have been obtained. We successfully control the intensity and lifetime of fluorescence and SP-FWM signals by changing the power or frequency detuning of the dressing field. The research has potential applications in optical switches and all optical communication.
Abstract We investigate intensity noise correlation of hybrid signals generated through spontaneous parametric four-wave mixing and fourth-order fluorescence signals from the nitrogen-vacancy center in diamond. The degree of hybrid correlation changes with power, frequency detuning, and experimental temperature. A theoretical model including spontaneously generated coherence in the dressed-state picture is set up to explain this phenomenon. We also observed damped Rabi oscillations in spontaneous parametric four-wave mixing and attributed it to quantum interference between two four-wave mixing transition paths.
Color defects in a diamond nitrogen-vacancy (NV) center represent an important physical system for emergent quantum technologies such as logic gates and registers at room temperature. We realized an optical logic NOT gate by inducing a phase shift in a diamond NV center under nonlinear Kerr effect of spontaneous parametric four-wave mixing (SP-FWM). Also, we discussed the intensity–noise correlation and intensity-difference squeezing of SP-FWM and composite signals (SP-FWM+fluorescence) under self-phase modulation (SPM) and cross-phase modulation (XPM) induced by the nonlinear Kerr effect in V-type and double V-type atomic systems. Our experimental results provide an advanced technique of switching contrast by approximately 90%. Different parameters, such as the power of input laser beam and boxcar gate position, were also configured to control the SPM and XPM, which determine the switching phenomenon for correlation and squeezing.