February 2017

Journal

Superdense coding over optical fiber links with complete Bell-state measurements

By:
Williams, Brian P; Sadlier III, Ronald J; Humble, Travis S
Journal Name:
Physical Review Letters
Page Number:
050501-1-050501-5
Volume:
118
Issue Number:
118
Publication Date:
February 2017
View DOI Listing:
https://doi.org/10.1103/PhysRevLett.118.050501

Abstract

Adopting quantum communication to modern networking requires transmitting quantum information through fiber-based infrastructure. We report the first demonstration of superdense coding over optical fiber links, taking advantage of a complete Bell-state measurement enabled by time-polarization hyperentanglement, linear optics, and common single-photon detectors. We demonstrate the highest single-qubit channel capacity to date utilizing linear optics, 1.665 ± 0.018, and we provide a full experimental implementation of a hybrid, quantum-classical communication protocol for image transfer.