A Belief Propagation-based Quantum Joint-Detection Receiver for Superadditive Optical Communications

Narayanan Rengaswamy, Kaushik P. Seshadreesan, Saikat Guha, Henry Pfister

Abstract

We design a quantum joint-detection receiver for binary-phase-shift-keyed optical communications using belief propagation with quantum messages. For an exemplary tree code, the receiver attains the block-Helstrom limit in discriminating the codewords and achieves superadditive capacity.

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Atomic and Molecular Physics, and Optics

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