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Proceedings Paper

Superdense coding for quantum networking environments
Author(s): Brian P. Williams; Ronald J. Sadlier; Travis S. Humble
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Paper Abstract

Quantum networks provide a versatile infrastructure for communication, computing, and sensing with quantum information. Novel sources and detectors for transmitting and receiving quantum states are critical elements in the development and eventual deployment of robust quantum networks. Alongside performance, the compatibility of quantum network devices with modern networking infrastructure is an important requirement for deployment. We present results on the integration of quantum communication using superdense coding transmitted over optical fiber links into network environments. Our approach takes advantage of a novel complete Bell-state measurement setup that relies on hyper-entanglement in the temporal and polarization degrees of freedom for a two-photon state emitted from a quantum light source. Using linear optics and common single-photon detectors, we record a single-qubit channel capacity of 1.665±0.018. We then demonstrate a full experimental implementation of hybrid, quantum-classical communication protocol for image transfer applications. Our devices integrate with existing fiber optical network and software-defined transmitters and receivers as part of a modular design to provide an extensible quantum communication system that can adapt to future quantum technology goals.

Paper Details

Date Published: 22 February 2018
PDF: 8 pages
Proc. SPIE 10547, Advances in Photonics of Quantum Computing, Memory, and Communication XI, 105470B (22 February 2018); doi: 10.1117/12.2295016
Show Author Affiliations
Brian P. Williams, Oak Ridge National Lab. (United States)
Ronald J. Sadlier, Oak Ridge National Lab. (United States)
Univ. of Tennessee (United States)
Travis S. Humble, Oak Ridge National Lab. (United States)

Published in SPIE Proceedings Vol. 10547:
Advances in Photonics of Quantum Computing, Memory, and Communication XI
Zameer Ul Hasan; Philip R. Hemmer; Alan E. Craig; Alan L. Migdall, Editor(s)

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