Plasmon-assisted quantum control of distant emitters

Titelangaben

Susa, Cristian E. ; Reina, John H. ; Hildner, Richard:
Plasmon-assisted quantum control of distant emitters.
In: Physics Letters A. Bd. 378 (2014) Heft 32-33 . - S. 2371-2376.
ISSN 0375-9601
DOI: https://doi.org/10.1016/j.physleta.2014.06.038

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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 (∼1µm) 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.