Plasmon-assisted quantum control of distant emitters

Abstract

We show how to generate and control the correlations in a set of two distant quantum emitters coupled to a one-dimensional dissipative plasmonic waveguide. An external laser field enhances the dimer's steady-state correlations and allows an active control (switching on/off) of nonclassical correlations. The plasmon-assisted dipolar-interacting qubits exhibit persistent correlations, which in turn can be decoupled and made to evolve independently from each other. The setup enables long-distance ($\sim 1\mu$m) qubit control that works for both resonant and detuned emitters. For suitable emitter initialization, we also show that the quantum correlation is always greater than the classical one.

arXiv comment7 pages, 4 figures

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• Emergence of maximal hidden quantum correlations and its trade-off with the filtering probability in dissipative two-qubit systems