Southwest Quantum Information and Technology

Transduction of Entangled Images by Localized Surface Plasmons

Presenting Author: Javad Dowran, University of Oklahoma
Contributing Author(s): Matthew Holtfrerich, University of Oklahoma Raphael C. Pooser, Oak Ridge National Laboratory Benjamin J. Lawrie, Oak Ridge National Laboratory Roderick Davidson, Oak Ridge National Laboratory Alberto M. Marino, University of Oklahoma

The field of quantum plasmonics has attracted broad interest in recent years, motivated by nano-imaging and sub-wavelength photonic circuits. The potential for nanoscale quantum information processing (QIP) and quantum plasmonic sensing has led to multiple experiments which explore the interface between quantum optics and plasmonics. We study the interface between continuous variable (CV) entangled images and localized surface plasmons (LSPs). We generate entangled images with four-wave mixing (FWM) in Rb atoms in a double-lambda configuration. The entangled images are then sent through two spatially separated plasmonic structures, which consist of an array of triangular nanoholes in a silver metal film designed to excite LSPs. After transduction through the plasmonic structure, mediated by extraordinary optical transmission (EOT), the entanglement properties of the images are characterized. We show that both the entanglement and spatial properties of the entangled images are preserved by the LSPs. This results show that the transfer of entanglement and quantum information from multi-spatial mode photons to LSPs and back to photons is a coherent process that preserves the entanglement properties and spatial quantum information of the incident light. By addressing two spatially separated plasmonic structures in this process, the entanglement between the photons is effectively transferred to the plasmons during a short period of time.

(Session 5 : Thursday from 5:00 - 7:00 pm)