Quantum plasmonics with a metal nanoparticle array

Changhyoup Lee, Mark Tame, James Lim, and Jinhyoung Lee
Phys. Rev. A 85, 063823 – Published 21 June 2012

Abstract

We investigate an array of metal nanoparticles as a channel for nanophotonic quantum communication and the generation of quantum plasmonic interference. We consider the transfer of quantum states, including single qubits as plasmonic wave packets, and highlight the necessity of a quantum-mechanical description by comparing the predictions of quantum theory with those of classical electromagnetic theory. The effects of loss in the metal are included, thus putting our investigation into a practical setting and enabling the quantification of the performance of realistic nanoparticle arrays as plasmonic quantum channels. We explore the interference of single plasmons, finding nonlinear absorption effects associated with the quantum properties of the plasmon excitations. This work highlights the benefits and drawbacks of using nanophotonic periodic systems for quantum plasmonic applications, such as quantum communication and the generation of quantum interference.

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  • Received 13 January 2012

DOI:https://doi.org/10.1103/PhysRevA.85.063823

©2012 American Physical Society

Authors & Affiliations

Changhyoup Lee1,2,3, Mark Tame4, James Lim1,2,3, and Jinhyoung Lee1,2

  • 1Department of Physics, Hanyang University, Seoul 133-791, Korea
  • 2Center for Macroscopic Quantum Control, Seoul National University, Seoul 151-742, Korea
  • 3Research Institute for Natural Sciences, Hanyang University, Seoul 133-791, Korea
  • 4QOLS, The Blackett Laboratory, Imperial College London, Prince Consort Road, London SW7 2BW, United Kingdom

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Issue

Vol. 85, Iss. 6 — June 2012

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