Qubit entanglement across ε-near-zero media

S.-A. Biehs and G. S. Agarwal
Phys. Rev. A 96, 022308 – Published 9 August 2017

Abstract

Currently, epsilon-near-zero (ENZ) materials have become important for controlling the propagation of light and enhancing by several orders of magnitude the Kerr and other nonlinearities. Given this advance it is important to examine the quantum electrodynamic processes and information tasks near ENZ materials. We study the entanglement between two two-level systems near ENZ materials and compare our results with the case where the ENZ material is replaced by a metal. It is shown that with ENZ materials substantial entanglement can be achieved over larger distances than for metal films. We show that this entanglement over large distances is due to the fact that one can not only have large emission rates but also large energy transmission rates at the epsilon-near-zero wavelength. This establishes the superiority of ENZ materials for studying processes specifically important for quantum information tasks.

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  • Received 3 July 2017

DOI:https://doi.org/10.1103/PhysRevA.96.022308

©2017 American Physical Society

Physics Subject Headings (PhySH)

Quantum Information, Science & TechnologyCondensed Matter, Materials & Applied Physics

Authors & Affiliations

S.-A. Biehs*

  • Institut für Physik, Carl von Ossietzky Universität, D-26111 Oldenburg, Germany

G. S. Agarwal

  • Institute for Quantum Science and Engineering and Department of Biological and Agricultural Engineering, Texas A&M University, College Station, Texas 77845, USA

  • *s.age.biehs@uni-oldenburg.de

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Vol. 96, Iss. 2 — August 2017

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