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arXiv · 2011.13711

Two-excitation routing via linear quantum channels

Tony John George Apollaro·Wayne Jordan Chetcuti
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Abstract

Routing quantum information among different nodes in a network is a fundamental prerequisite for a quantum internet. While single-qubit routing has been largely addressed, many-qubit routing protocols have not been intensively investigated so far. Building on the many-excitation transfer protocol in arXiv:1911.12211, we apply the perturbative transfer scheme to a two-excitation routing protocol on a network where multiple two-receivers block are coupled to a linear chain. We address both the case of switchable and permanent couplings between the receivers and the chain. We find that the protocol allows for efficient two-excitation routing on a fermionic network, although for a spin-$\frac{1}{2}$ network only a limited region of the network is suitable for high-quality routing.

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Tony John George Apollaro, Wayne Jordan Chetcuti. 2020-11-27. Two-excitation routing via linear quantum channels. https://doi.org/10.3390/e23010051

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