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

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, $1.665\pm 0.018$, and we provide a full experimental implementation of a hybrid, quantum-classical communication protocol for image transfer.

5 pages, 6 figures

References in corpus (4)

• Beating the channel capacity limit for linear photonic superdense coding
• Complete and Deterministic discrimination of polarization Bell state assisted by momentum entanglement
• Quantum Security for the Physical Layer
• Software-defined Quantum Communication Systems

Cited by in corpus (1)

• Recovering the full dimensionality of hyperentanglement in collinear photon pairs