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arXiv · 2603.03263

Generalised All-Optical Cat Correction

Ari John Boon·Olivier Landon-Cardinal·Nicolás Quesada
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Abstract

We have generalised an all-optical telecorrection protocol for the higher orders of the cat code, and show that with these higher orders we can achieve target performance at substantially reduced iteration counts at the cost of a higher mean photon-number. We also introduce a probabilistic scheme for correcting deformation of the state, which highlights two interesting abilities of telecorrection: to encode new sets of transformations, and to change the basis of the code. We find that for a target channel fidelity of $99.9\%$ over a channel with $1\text{ dB}$ of loss, a third-order cat code requires $70$ times fewer telecorrection iterations than a first-order one, at a cost of a $3.6$-fold increase in mean photon-number.

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Ari John Boon, Olivier Landon-Cardinal, Nicolás Quesada. 2026-03-03. Generalised All-Optical Cat Correction. https://arxiv.org/abs/2603.03263

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