Hybrid one-way quantum repeater concatenated with the [[5,1,3]] code
K.J. Wo Kah Jen (TU Delft - Applied Sciences)
J. Borregaard – Mentor (TU Delft - QN/Borregaard groep)
More Info
expand_more
Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.
Abstract
An improvement to the existing one-way quantum repeater network using the tree cluster state as the quantum error correcting code is presented. Namely, the [[5,1,3]] quantum error correcting code is introduced as an outer code while the tree code becomes the inner code. Using this approach, we present a novel hybrid one-way quantum repeater architecture with more than one type of quantum repeater in its network. We considered both the non-fault-tolerant and fault-tolerant variants of the [[5,1,3]] code in our study of the hybrid repeater network. A novel improvement to the [[5,1,3]] code is also presented, where we also consider using it for quantum erasure correction. Additionally, we introduced a novel method of extrapolating an approximate fidelity of a quantum state after arbitrary applications of a noisy quantum channel. With these, we see magnitudes of order of boost in the resulting secret key rate in our approach.