title: Superdense Coding over Optical Fiber Links with Complete Bell-State Measurements.
abstract: Adopting quantum communication to modern networking requires transmitting quantum information through a 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.
authors.affiliation: Quantum Computing Institute, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.
authors.forename: Brian P
authors.initials: BP
authors.lastname: Williams
authors.affiliation: Quantum Computing Institute, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.
authors.forename: Ronald J
authors.initials: RJ
authors.lastname: Sadlier
authors.affiliation: Quantum Computing Institute, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.
authors.forename: Travis S
authors.initials: TS
authors.lastname: Humble