Work

Scalable Structure for Chiral Quantum Routing

Year: 2025

Type: article

Abstract: We address the problem of routing quantum and classical information from one sender to many possible receivers in a network. By employing the formalism of quantum walks, we describe the dynamics on a discrete structure based on a complete graph, where the sites naturally provide a basis for encoding the quantum state to be transmitted. Upon tuning a single phase or weight in the Hamiltonian, we achieve near-unitary routing fidelity, enabling the selective delivery of information to designated receivers for both classical and quantum data. The structure is inherently scalable, accommodating an arbitrary number of receivers. The routing time is largely independent of the network's dimension and input state, and the routing performance is robust under static and dynamic noise, at least for a short time.

Source: Entropy

DOI: 10.3390/e27050498

Authors: Giovanni Ragazzi, Simone Cavazzoni, Claudia Benedetti, Paolo Bordone, Matteo G. A. Paris

Institutions: University of Modena and Reggio Emilia, University of Milan, National Research Council

Language: English

Topic: Quantum Computing Algorithms and Architecture

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,137

Funder: European Commission