Two-Excitation Routing via Linear Quantum Channels

oleh: Tony John George Apollaro, Wayne Jordan Chetcuti

Format: Article
Diterbitkan: MDPI AG 2020-12-01

Deskripsi

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 a recently proposed many-excitation transfer protocol, 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-<inline-formula><math display="inline"><semantics><mfrac><mn>1</mn><mn>2</mn></mfrac></semantics></math></inline-formula> network only a limited region of the network is suitable for high-quality routing.