Perfect transfer of multiple excitations in quantum networks

TL;DR

This paper introduces a comprehensive formalism for achieving perfect transfer of multiple excitations in quantum networks, accommodating interactions and multiple excitations on the same site, advancing quantum communication capabilities.

Contribution

It provides a novel, flexible formalism for perfect state transfer involving multiple excitations with interactions, applicable to various physical quantum network implementations.

Findings

Formalism enables perfect transfer of multiple excitations with interactions.

Handles multiple excitations focused on the same site.

Applicable to diverse physical realizations of quantum networks.

Abstract

We present a general formalism to the problem of perfect state-transfer (PST), where the state involves multiple excitations of the quantum network. A key feature of our formalism is that it allows for inclusion of nontrivial interactions between the excitations. Hence, it is perfectly suited to addressing the problem of PST in the context of various types of physical realizations. The general formalism is also flexible enough to account for situations where multiple excitations are "focused" onto the same site.