Abstract
We investigate the dynamics of quantum correlation between two separated nitrogen vacancy centers (NVCs) placed near a one-dimensional plasmonic waveguide. As a common medium of the radiation field of NVCs propagating, the plasmonic waveguide can dynamically induce quantum correlation between the two NVCs. It is interesting to find that such dynamically induced quantum correlation can be preserved in the long-time steady state by locally applying individual driving on the two NVCs. In particular, we also show that a large degree of quantum correlation can be established by this scheme even when the distance between the NVCs is much larger than their operating wavelength. This feature may open new perspectives for devising active decoherence-immune solid-state optical devices and long-distance NVC-based quantum networks in the context of plasmonic quantum electrodynamics.
Highlights
IntroductionWe find that a finite steady-state quantum correlation can be established by individually applying the external driving on the NVCs separated with long distance, which is quantitatively different from the result of approaching zero in the absence of continuous driving
Been devoted to theoretically address the emitter-plasmons coherent coupling[22,23,24,25], and entanglement between separated emitters mediated by plasmonic modes[4,26,27]
The broadband enhancement of spontaneous emission enabled by nanoplasmonic approaches offers the possibility of strong coupling to NVCs, which was otherwise difficult to achieve by conventional quantum optical techniques[36]
Summary
We find that a finite steady-state quantum correlation can be established by individually applying the external driving on the NVCs separated with long distance, which is quantitatively different from the result of approaching zero in the absence of continuous driving. Such stable quantum correlation generation between distant NVCs is the preprequisites for realizing large-scale NVC-based quantum networks[37,38,39]
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