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Quantum correlations in quantum emitters strongly coupled with metallic nanoparticles

  • Nikos Iliopoulos
  • Ioannis Thanopulos
  • Vassilios Yannopapas
  • Emmanuel PaspalakisEmail author
Article
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Abstract

We study the dynamics of two initially entangled qubits prepared in an extended Werner-like state, where each one interacts locally with a spherical metallic nanoparticle. We combine quantum dynamics beyond the rotating-wave approximation with classical electromagnetic calculations in order to compute the time evolution of quantum discord and entanglement using entanglement of formation. We present results for qubits either quantum dots or J-aggregates and compare the evolution of quantum discord and entanglement of formation. We find interesting phenomena such as entanglement sudden death, periodic entanglement revival, entanglement oscillations and entanglement trapping by varying the initial state or the distance of each qubit to the corresponding nanoparticle.

Keywords

Quantum correlations Quantum discord Entanglement of formation Quantum emitter Metallic nanoparticle Strong light-matter coupling 

Notes

Acknowledgements

Nikos Iliopoulos acknowledges the support of his Ph.D. by the General Secretariat for Research and Technology (GSRT) and the Hellenic Foundation for Research and Innovation (HFRI) via a doctoral scholarship (Grant No. 2649). We acknowledge useful discussions with Prof. Andreas F. Terzis and his help in the calculation of quantum correlations.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Nikos Iliopoulos
    • 1
  • Ioannis Thanopulos
    • 2
  • Vassilios Yannopapas
    • 3
  • Emmanuel Paspalakis
    • 1
    Email author
  1. 1.Materials Science Department, School of Natural SciencesUniversity of PatrasPatrasGreece
  2. 2.Department of Optics and OptometryT.E.I. of Western GreeceAigioGreece
  3. 3.Department of PhysicsNational Technical University of AthensAthensGreece

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