2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/141770We construct a theory of continuous-variable entanglement-assisted quantum error correction. We present an example of a continuous-variable entanglement-assisted code that corrects for an arbitrary single-mode error. We also show how to implement encoding circuits using passive optical devices, homodyne measurements, feedforward classical communication, conditional displacements, and off-line squeezers.8 pages, 1 figure, major expansion of paper with detailed exampleQuantum Physicstext