Spin-chain-star systems: entangling multiple chains of spin qubits

TL;DR

This paper introduces a method to exactly map complex spin-chain-star systems into standard models, enabling analysis of quantum correlations and entanglement among multiple spin chains.

Contribution

It provides an exact mapping technique for N-wise many-body spin-chain-star systems, facilitating their dynamic analysis and understanding of quantum entanglement.

Findings

Exact mapping of complex systems to standard spin-star models

Demonstration of quantum correlations and entanglement emergence

Solution of the dynamic problem for XX spin-chain-star models

Abstract

We consider spin-chain-star systems characterized by N-wise many-body interactions between the spins in each chain and the central one. We show that such systems can be exactly mapped into standard spin-star systems through unitary transformations. Such an approach allows the solution of the dynamic problem of an XX spin-chain-star model and transparently shows the emergence of quantum correlations in the system, based on the idea of entanglement between chains.