4.6 Article

Plasmonic nanoantennas for efficient control of polarization-entangled photon pairs

Journal

PHYSICAL REVIEW A
Volume 86, Issue 1, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.86.011801

Keywords

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Funding

  1. Australian Research Council

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We suggest a source of polarization-entangled photon pairs based on a cross-shaped plasmonic nanoantenna driven by a single quantum dot. The integration of the nanoantenna with a metal mirror overcomes the fundamental tradeoff between the spontaneous emission (SE) enhancement and the extraction efficiency typical of microcavity- and nanowire-based architectures. With a very high extraction efficiency of entangled photons (approximate to 90%) at 1.55 mu m and large SE enhancement (approximate to 90) over a broad 330-nm spectral range, the proposed design will pave the way toward reliable integrated sources of nonclassical light.

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